reinstalled sh3 , now can't run the game

[pkpowers]

Sh3 used to run great for me, but now after reinstall try to start game and get a pink spotted screen that turns to solid green and have to Cnt alt del
to get out of it. SH4 does the same thing now.

have tweaked video card= no luck

specs win xp sp3 , gateway p4 2.60gigs, 2 gig ram , nvidia geforce 6200

looked for old versions of folders and jgsme but not on system

updated video driver = no luck
went back to driver when games worked = no luck

also battle of britain 2 and falcon 4.0 alled force work great

I have done a forum search but no luck either

need help to play again !!!!

thanks