I bought the EZ grabber with the switchable scart socket (as recommended) at the same time and found it easy to put together. The instructions were pretty dire because the "manual" (if you could call it that) is not written in English, and the English translations are actually so bad in places that they're quite funny. You might need a microscope to read the print, too - I'd guess it's written in font size -2 or something. That said, experienced computer users shouldn't need the instructions.
Software installation took a surprisingly long time, but it went smoothly enough. And immediately afterwards the grabber was doing exactly what it was supposed to do - reading (really old) VHS video tapes in a (really old) VCR in to my trusty PC.
I would advise against installing the Corel U-Lead Video software supplied with the grabber - it's a load of old rubbish. The EZ Grabber's own software is actually much better. Or you can use something like Nero or Roxio to take care of the capturing. Anything but Corel!
Be advised that you will have to fiddle around with the configuration to get the best results, but that's no chore at all. I just set it to PAL instead of NTSC then tried each sub-option, one after the other, until I found the one that put the best picture on screen.
I should probably add that I haven't tried the grabber with anything but a direct PC to VCR connection and bog standard VHS tapes. Maybe that's why I'm having more luck with it than seems to be the case with other reviewers - who knows?
The only reason I don't give this piece of a kit 5 stars is because of that whole Corel thing and the appalling "manual". Neither are a real problem, but they are irritating.
And remember not to expect DVD quality film output from scratchy old VHS tapes - it just ain't gonna happen no matter how much you fiddle with the software colour controls.
Happy grabbing :o)