strange problem with recognition of video card

[radiking]

hello all,

i successfully installed harazd's leo snow leopard and at costumization i clicked on ati enabler and exotic drivers i e additional drivers for ati...i am able to boot from navcom boot cd..strangely its recognises as radeon hd 4890.i installed kexts for ati mobility 5470 from osx86.net and edited the plist to

<key>AtiConfig</key>

<string>Hoolock</string>

<key>GraphicsEnabler</key>

<string>Yes</string>

but still no changes after reboot same thing it shows as ati hd radeon 4890 so how to fix this any help will be appreciated thanks