I am a just willilng to start video editing. Low Budget!. (Later will think of upgrade, to PCI express Graphics). As far i know Intel GMA 900 (included on (915G mobo) fully supports DirectX 9. I can share upto 128MB (specified in magazine reviews).
Should this work with 2GB DDR 400 in dual channel mode. CPU is 3Ghz. (at least for the time i am learning to edit in LE6)