Ive ripped a few dvds using smartripper, then dvd2avi for the wav file, and ive got tmpgenc 2.56.39.143 for encoding, the problem is on different parts of the move tmpgenc will freeze, mostly causing the pc to lockup. Ive had probs with a few dvds now, seems to do it at different stages of encoding. Ive looked through loads of posts for help and followed the guides for ripping dvds. Has anyone got any suggestions?
ive also tried changing the direct show to a higher value but still with no success.

ive got
amd duron 1.1
20 gn hdd (with about 13 gb free)
256 mb ram
o.s windows 98