Just received this tutorial from CycloneFr, check it out:

Okay guys, Neophus and I were working for months on the famous
Borisbadenov hack, and as we said latest .8 drivers were kernel
dependant. You may have seen Neo posted a 3.4 package for PCIE users
which is working fine (said to). The problem is Apple
(intentionally?) avoid us to use ATINDRV without PCIE support. Before
it was working as PCI, but the new IONDRVSupport.kext seems to force
PCIE mode. All of this to post an AGP fix for X1600 users.

Grab ATINDRV .5.kext (included in Neo 3.2 pkg) else u’ll still get
the artefacts under games (latest ATINDRV overclock the card)

Grab IONDRVSupport .5 or .7 as you want (included in the combo .7)

Run in Terminal:

sudo -s
rm -R /System/Library/Extensions/ATINDRV.kext
rm -R /System/Library/Extensions/IONDRVSupport.kext
cp -R (drag and drop ATINDRV.kext and remove the / at the end) /System/Library/Extensions/
cp -R (drag and drop IONDRVSupport.kext and remove the / at the end) /System/Library/Extensions/
reboot