sorry there. thought u're problem was cleared. .
u'll need to change mobo . .get 2 gigs ram . its enough . 4gb may do more harm than good as 32 bit OS seem to have problems with 4gb ram .. and there are not many 64 bit apps today..
you will definitely need to change your mobo ( dont know why u bought that crappy mobo in the first place ) . .
for 7-7.5k u'll need to get the g-card + mobo . best option will be to get
xfx 630i - 3.5k
8600GT - 4.5k ( avoid XFX brand , try palit sonic )
get single stick of 2gig ram . . if u can put a bit more money , get abit ip35e mobo .. xfx 630i does not support dual channel memory mode...