9800 GTX+ GFX string does not work

[crtman]

Hi, I'm installing retail 10.5.6 and having problems with my video card. I've tried NVinject and it got my resolution but not QE. Then I tried GFX string using OSx86 Tools but no luck. I just get 1024x768 with lots of artifacts (see screenshot). Here is my string:

<?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>Kernel Flags</key>
<string></string>
<key>device-properties</key>
<string>d20300000100000001000000c60300001500000002010c00d041030a0100000001010600001c0
01060000007fff040014000000400032002c006e0061006d00650000001100000073656e736f722d
06172656e74220000005600520041004d002c0074006f00740061006c00730069007a00650000000
0000000000002036000000400032002c00680077006300740072006c002d0070006100720061006d
073002d00760065007200730069006f006e00000008000000000000021c000000640065007600690
630065005f0074007900700065000000100000004e5644412c4765466f7263650e0000006e006100
d00650000000f0000004e5644412c506172656e7422000000400030002c006400650076006900630
65005f00740079007000650000000b000000646973706c6179100000006d006f00640065006c0000
01f0000004e5649444941204765466f7263652039383030204754582044444c22000000400031002
006400650076006900630065005f00740079007000650000000b000000646973706c617912000000
00032002c007200650067000000080000000000000222000000400032002c0064006500760069006
0065005f0074007900700065000000120000004e5644412c6770752d64696f646520000000400032
02c0063006f006d00700061007400690062006c0065000000160000004e5644412c73656e736f722
706172656e7422000000400032002c002300730069007a0065002d00630065006c006c0073000000
80000000000000020000000400031002c0063006f006d00700061007400690062006c00650000000
0000004e5644412c4e564d616314000000400030002c006e0061006d0065000000120000004e5644
12c446973706c61792d413a000000400032002c0068007700730065006e0073006f0072002d00700
6100720061006d0073002d00760065007200730069006f006e000000080000000000000226000000
00032002c0023006100640072006500730073002d00630065006c006c00730000000800000000000
0114000000400031002c006e0061006d0065000000120000004e5644412c446973706c61792d4220
00000400030002c0063006f006d00700061007400690062006c00650000000e0000004e5644412c4
564d61631e00000072006f006d002d007200650076006900730069006f006e000000090000003331
73261100000004e00560043004100500000001800000004000000000003000c00000000000007000
00000e0000004e00560050004d000000200000000100000000000000000000000000000000000000
000000000000000</string>
</dict>
</plist>