the ps2 is not 100 percent backwards compatible, sony even admitted this, and lots of games crash with there mere "enhancements"
The way to go is Bleemcast!!!! as long as they keep makin money and can get out of debt they will make all the best games on the psx on to the dc, if n e 1 here has got gt2 and a dc get the bleem pak! it really is amazing the improvements, also mgs and tekken 3 look sweeeeeet and smackdown 1 and 2 are comin out for it, WAYhaY!