Almost sounds like a possible permalink problem, or maybe .htaccess.. =/ Can you share with us your current permalink structure, and a copy of what’s in your .htaccess file please?
I’m not a Pro at this, but, maybe someone else can help you better though.. ;):)
spencerp
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteRule ^favicon.ico$ http://_____.com/wp-content/themes/revvedup-150/images/favicon.ico [QSA,L]
</IfModule>
#<IfModule mod_rewrite.c>
RewriteEngine Off
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
DirectoryIndex index.php index.html /index.php?template_page=directoryindex
ErrorDocument 400 /index.php
ErrorDocument 401 /index.php
ErrorDocument 403 /index.php
ErrorDocument 404 /index.php
ErrorDocument 405 /index.php
ErrorDocument 408 /index.php
ErrorDocument 410 /index.php
ErrorDocument 411 /index.php
ErrorDocument 412 /index.php
ErrorDocument 413 /index.php
ErrorDocument 414 /index.php
ErrorDocument 415 /index.php
ErrorDocument 500 /index.php
ErrorDocument 501 /index.php
ErrorDocument 502 /index.php
ErrorDocument 503 /index.php
ErrorDocument 506 /index.php
# END WordPress