You want to enable 3D acceleration? glxinfo will tell you at the top of the output whether Direct Rendering is on or off. DRI - Direct Rendering Infrastructure is the technology OpenGL apps use to render 3D. Basic 3D acceleration is enabled with the default video driver loaded when you're card was detected.
An Intel 815 driver is available and should be loaded on your system.
http://dri.sourceforge.net/cgi-bin/moin.cgi/Intel
The installation of your Fedora system should have setup the correct "i810" driver already, and thus checking the output of `glxinfo` for "Direct Rendering: Yes" will confirm 3D accelaration as enabled.
If it's not, run through this guide to set it up:
http://dri.sourceforge.net/doc/DRIbeginner.html
Linear Mode
