Ok i've searched all over the forums and i found very little that even talks about this. anytime i try to use an application that uses rosetta i get the faded screen that tells me i need to restart or the whole system freezes before it can even get that far it is driving me mad any help would be greatly appreciated

Here are my specs:
iDeneb V1.3 10.5.5
AMD athlon X2 4400+ SSE3
Gigabyte ga-ma78gm-s2h rev 1.1 (fully working)
2 seagate 500 gig sata hdd's
2x2 gigs corsair ddr2 ram
8800gts EVGA
2 lite-on ide dvd burners

Thank u for any help if u need more info let me know