Help with pagination class php (wpsc)

Some one please help me!!
wp version:2.9.2
wpsc version:3.7.6.1
I can’t get pagination to work on my wpsc for my product list even with pagination turned on in the setting panel and after deleting the content of the cache in the Wp_options table in the DB.
I’ve been trawlling the web for a whole month now looking for a solution that works. I discovered there is a pagination.class.php file in the wpsc and I wonder if the answer may lie in the code. Unfortunately I don’t know php at all so I’m weary of tampering with the file.

Can someone please tell me what might work? Here is the php code as is:
<?php

/**
* wpsc pagination
* It is intended to move some of this functionality to a paging class
* so that paging functionality can easily be created for multiple uses.
*/

/**
* wpsc current_page
* @return (int) The current page number
*/
function wpsc_current_page() {

global $wpsc_query;

$current_page = 1;

if ( $wpsc_query->query_vars[‘page’] > 1) {
$current_page = $wpsc_query->query_vars[‘page’];
}

return $current_page;

}

/**
* wpsc showing products
* Displays the number of page showing in the form “10 to 20”.
* If only on page is being display it will return the total amount of products showing.
* @return (string) Number of products showing
*/
function wpsc_showing_products() {

global $wpsc_query;

// If we are using pages…
if ( ( get_option( ‘use_pagination’ ) == 1 ) ) {
$products_per_page = $wpsc_query->query_vars[‘number_per_page’];
if ( $wpsc_query->query_vars[‘page’] > 0 ) {
$startnum = ( $wpsc_query->query_vars[‘page’] – 1 ) * $products_per_page;
} else {
$startnum = 0;
}
return ( $startnum + 1 ) . ‘ to ‘ . ( $startnum + wpsc_product_count() );
}

return wpsc_total_product_count();

}

/**
* wpsc showing products page
* Displays the number of page showing in the form “5 of 10”.
* @return (string) Number of pages showing.
*/
function wpsc_showing_products_page() {

global $wpsc_query;

$output = $wpsc_query->page_count;
$current_page = wpsc_current_page();

return $current_page . ‘ of ‘ . $output;

}

/**
* wpsc pagination
* Page numbers as links – limit by passing the $show parameter.
* @param $show (int) Number of pages to show, -1 shows all. Zero will be used to show default setting in a future release.
* @return (string) Linked page numbers.
*/
function wpsc_pagination( $show = -1 ) {

global $wpsc_query;

$output = ”;
$start = 1;
$end = $wpsc_query->page_count;
$show = intval( $show );

$current_page = wpsc_current_page();

if ( $show > 0 ) {
$start = $current_page – ( floor( $show / 2 ) );
if ( $start < 1 ) {
$start = 1;
}
$end = $start + $show – 1;
if ( $end > $wpsc_query->page_count ) {
$end = $wpsc_query->page_count;
if ( $end – $show + 1 > 0 ) {
$start = $end – $show + 1;
}
}
}
while ( wpsc_have_pages() ) : wpsc_the_page();
if ( wpsc_page_number() >= $start && wpsc_page_number() <= $end ) {
if ( wpsc_page_is_selected() ) :
$output .= ‘‘ . wpsc_page_number() . ‘ ‘;
else :
$output .= ‘‘ . wpsc_page_number() . ‘ ‘;
endif;
}
endwhile;

$wpsc_query->rewind_pages();

return $output;

}

/**
* wpsc adjacent products url
* URL for the next or previous page of products on a category or group page.
* @param $n (int) Page number.
* @return (string) URL for the adjacent products page link.
*/
function wpsc_adjacent_products_url( $n ) {

global $wpsc_query;

$current_page = wpsc_current_page();

$n = $current_page + $n;

if ( $n < 1 || $n > $wpsc_query->page_count ) {
return;
}

while ( wpsc_have_pages() ) : wpsc_the_page();
if ( wpsc_page_number() == $n ) {
$url = wpsc_page_url();
$wpsc_query->rewind_pages();
return $url;
}
endwhile;

$wpsc_query->rewind_pages();

return;

}

/**
* wpsc next products link
* Links to the next page of products on a category or group page.
* @param $text (string) Link text.
* @param $show_disabled (bool) Show unlinked text if last page.
* @return (string) Next page link or text.
*/
function wpsc_next_products_link( $text = ‘Next’, $show_disabled = false) {

$page_url = wpsc_adjacent_products_url( 1 );

if ( $page_url ) {
return ‘‘ . $text . ‘‘;
}

if ( $show_disabled ) {
return ‘<span>’ . $text . ‘</span>’;
}

return;

}

/**
* wpsc previous products link
* Links to the previous page of products on a category or group page.
* @param $text (string) Link text.
* @param $show_disabled (bool) Show unlinked text if first page.
* @return (string) Previous page link or text.
*/
function wpsc_previous_products_link( $text = ‘Previous’, $show_disabled = false ) {

$page_url = wpsc_adjacent_products_url( -1 );

if ( $page_url ) {
return ‘‘ . $text . ‘‘;
}

if ( $show_disabled ) {
return ‘<span>’ . $text . ‘</span>’;
}

return;

}

/**
* wpsc first products link
* Links to the first page of products on a category or group page.
* @param $text (string) Link text.
* @param $show_disabled (bool) Show unlinked text if last page.
* @return (string) First page link or text.
*/
function wpsc_first_products_link( $text = ‘First’, $show_disabled = false ) {

global $wpsc_query;

$page_url = ”;

while ( wpsc_have_pages() ) : wpsc_the_page();
$page_url = wpsc_page_url();
break;
endwhile;

$wpsc_query->rewind_pages();

if ( $page_url && wpsc_current_page() > 1 ) {
return ‘‘ . $text . ‘‘;
}

if ( $show_disabled ) {
return ‘<span>’ . $text . ‘</span>’;
}

return;

}

/**
* wpsc last products link
* Links to the last page of products on a category or group page.
* @param $text (string) Link text.
* @param $show_disabled (bool) Show unlinked text if first page.
* @return (string) Last page link or text.
*/
function wpsc_last_products_link( $text = ‘Last’, $show_disabled = false ) {

global $wpsc_query;

$page_url = ”;

while ( wpsc_have_pages() ) : wpsc_the_page();
$page_url = wpsc_page_url();
endwhile;

$wpsc_query->rewind_pages();

if ( $page_url && wpsc_current_page() < $wpsc_query->page_count ) {
return ‘‘ . $text . ‘‘;
}

if ( $show_disabled ) {
return ‘<span>’ . $text . ‘</span>’;
}

return;

}

?>