I dont see any reason why SL would not work, other than the IGP. I have never seen anything showing that the 6150 would work, you could buy an 8600 for $30.
I found this app to be helpful for finding out if something is supported or not.

http://www.insanelymac.com/forum/ind...owtopic=219584

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MSI P43 Neo3-F
EVGA 250GTS 1GB
2GBs RAM
750GB SATA HDD - OS 10.6.4 (Software Update)
500GB SATA RAID HDD - Windows 7 64bit
DVD - R/W PATA