I have no idea about PCs, but iMacs come with iMovie installed for doing the editing (and iDVD too, for burning DVDs), so you just need an analogue-digital converter box to stick between your VHS player and computer. iMovie is very easy to use and intuitive for professional-looking edits, fades, credits etc. Looks like what Ian A used I'd say. I expect there'll be PC equivalents. The only other thing you need is a decent size hard drive as video files are huge. On YouTube I think you are limited to max 10 mins per clip, which will be why these programmes discussed here were edited that way.