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.
When you have installed, plug in the unit, open Debut, click on "device" at
the top.
Also,
You are capturing vhs? If so, are you using a switchable scart?