The only connect type to a PC that will capture in full quality is 'Firewire'
Many PC's (even bang upto date PC's) don't have a firewire port installed. You therefore need to get an internal (PCI) card for around £20 from the likes of
www.dabs.com and this should include the cable to connect cam to PC.
To edit footage on a PC you must be running Windows 98SE or later. Win98 first edition does not work with firewire ports unless you get a patch from MS. If you have Windows XP then you will have editing software included. This is Movie Maker, but is very poor and you should download the free upgrade to MM2.
Mark.
ps. firewire is also known as 'ieee1394' & 'DV port'.