Firsts things first, any computer made today is capable of editing video. A faster processor the better. Make sure that you get atleast two hard drives. One for your Operating system and the other for video/audio. You will see a better performance with this set-up. Video loves ram so get as much as possible.
Now you need to decide what software you want... there are loads to choose from. Avid, Pinnacle, Sony Ulead all make fine video editing products. A good product to have will be a Analog to Digital Converter. This will allow you to plug your VCR into this black box which will then connect to your computer via Firewire. Then you can capture analog footage just like it was coming straight out of your camcorder to DV. They have products like this ranging from 99 - 400 US dollars. Feel free to email me if you have any other questions.