Dell Inspiron 1501 need info about 3D acceleration...

Ive tried just about everything to get 3D acceleration working with my Dell Inspiron 1501.. I need help! the output of the 'fglrxinfo' command is:
Xlib: extension "XFree86-DRI" missing on display ":0.0".
display: :0.0 screen: 0
OpenGL vendor string: Mesa project: www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.4 (1.5 Mesa 6.5.2)

And ive read that if it reads 'mesa project.....etc' then its not working, and it needs to read 'ati.. etc'... I dont understand it, so any information is important to me no matter how ridiculous it sounds to you... I have Cedega and it says the 'openGL' test and '3D acceleration' test fail.. I have tried to get it working using 'Method 2' on this page:
http://wiki.cchtml.com/index.php/Ubuntu_Edgy_Installation_Guide
but at the bottom it says to use the command:
sudo module-assistant build fglrx
and this fails, giving me the option to view a log file filled with errors.. which is no help to me..

Even if you cant help me fix it, please help me understand what 'flgrx' is and the basic stages of installation and reasons for those stages