i have the ATI Radeon HD 4650 (RV730) with 1GB RAM
and my device id is 0x9498

by the way thanks for your post MonkeyDLuffy

and is this right for the boot plist:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel</key>
<string>mach_kernel</string>
<key>Timeout</key>
<string>5</string>
<key>Kernel Flags</key>
<string>arch=i386</string>
<key>EthernetBuiltIn</key>
<string>y</string>
<key>GraphicsEnabler</key>
<string>y</string>
</dict>
</plist>