How do you remove MESA drivers?

[DOS4dinner]

I got my drivers setup thanks to envy. However, it still says that I am using the MESA drivers for OpenGL stuff. How do I change that?

My machine:
Pentium 4 @2.6 ghz
ATI Radeon 9800 pro 128mb
1 gig of RAM

Thanks in advance.

Here is my xorg.0.log, if it helps:
(II) fglrx(0): driver needs X.org 7.1.x.y with x.y >= 0.0
(WW) fglrx(0): could not detect X server version (query_status=-3)
(EE) fglrx(0): atiddxDriScreenInit failed, GPS not been initialized.
(WW) fglrx(0): ***********************************************
(WW) fglrx(0): * DRI initialization failed! *
(WW) fglrx(0): * (maybe driver kernel module missing or bad) *
(WW) fglrx(0): * 2D acceleraton available (MMIO) *
(WW) fglrx(0): * no 3D acceleration available *
(WW) fglrx(0): ********************************************* *
(II) fglrx(0): FBADPhys: 0xf0000000 FBMappedSize: 0x08000000
(==) fglrx(0): Write-combining range (0xf0000000,0x8000000)
(II) fglrx(0): FBMM initialized for area (0,0)-(1280,8191)
(II) fglrx(0): FBMM auto alloc for area (0,0)-(1280,1024) (front color buffer - assumption)
(II) fglrx(0): Largest offscreen area available: 1280 x 7167
(==) fglrx(0): Backing store disabled
(II) Loading extension FGLRXEXTENSION
(II) Loading extension ATITVOUT