Graphic problems

[PLEXI]

Sides of objects aren't showing up for some reason. 
like this;
http://www.filepact.com/files/Blockland_00033.png

I just installed a ATI Radeon 3850 graphic card
on XP x86 not Vista.

anyone know how to fix this?

[Ad Bot]

[Apollo]

I think I need to make a topic about this.

http://www.blockland.us/smf/index.php?topic=27197.0