To get your video onto the PC you will need to get a firewire card installed (USB is too slow to capture full quality video). This card is normally supplied with a cable for connecting camcorder to PC. If not then you will need to get a 6pin to 4pin firewire cable.
A very good basic editing suite is Pinnicle Studio 8. It will allow you to capture, edit, add titles and transitions etc. and does not cost too much.
XP's movie maker is VERY basic but Micro$oft have a second edition (beta version) that can be downloaded from their web site that has a few improvements and additional features.
Take a look at
www.dabs.com or
www.ebuyer.co.uk
Mark.