USE METHOD TWO FOR BEST RESULTS
The Unofficial ATI Linux Driver Wiki
This not only works for the Dell Inspiron 1501 but any computer running Ubuntu 6.10 with an ATI card, like the X1600 or the X1150. Enjoy.
Verifying Proper Installation
You should see this:
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: RADEON XPRESS Series
OpenGL version string: 2.0.6334 (8.34.8)
Next Up: Getting the Xbox360 controller working on Ubuntu or any Debian based installs. Also "should" work on the PS3 with a Debian type install. Can't test because I don't own a PS3.