You would need to play around with tpl files...
Go to your Edit Templates...
/customer/main/product.tpl
You can copy and paste the file in Dreamweaver to see what it looks like.
You would need some technical knowledge to play with this file.
Not sure if you have made a lot of modification to the design. If you haven't you can always restore from original file in case you stuff it up.
Also have you gone through this....?
http://www.x-cart.com/xcart_manual/online/?customizing_the_look_n_feel.htm
I hope this helps..
Cheers
Ash