Sorry, Ulead V8.0 is not compatible with vista.
Try different software: (free and good)
Debut
http://www.nchsoftware.com/capture/When you go to the site, don't click on the links on the right hand side.
There is a download link for non commercial customers in the first paragraph
on the page.
Download and open.
Clcik on "device" at the top.