Help!!!

I am using a p3 600 system fitted with a WINTV GO tuner & capture card.
I want to transfer old video tapes from the past for keeping.
I am using win tv 2000(software) to capture video - have chosen divx as the codec and the record from my vcr starts ok but hangs up the computer after 2-3 mins of recording. The system has to be rebooted. ( this happens with all formats).

Has anyone out there got any suggestions as to what may be worng.