Did it come with a program called Ulead?
If so, Ulead is not compatible with Windows 7. This is the problem with buying an outdated piece of kit that was not made for the platform you are trying to get it to work on.
There is other software you can try. It is free and good and is compatible with windows 7.
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 install. (if the program opens, shut it down)
Plug the easycap in
Click on "device" at the top.