WP-load.php is showing error about function redeclarartion

Hiii,

I want to use wordpress functionality outside the WP-structure.
I included wp-load.php. But where ever i include the wp-load.php , it is showing the following error.

Fatal error: Cannot redeclare twentyten_page_menu_args() (previously declared in /home/example/public_html/wp-content/themes/wwo/functions.php:215) in /home/example/public_html/wp-content/themes/wwo/functions.php on line 218

.

the function twentyten_page_menu_args() is written on only one place.

Whenever wherever I include the wp-load.php this fatal error shows.

Please Tell me what may be the source of the error. Is this the nature of wp-load.php?