Ok well the camcorder won't need to necessary have a dv-in - just a dv-out. You'll need to be a FireWire or iLink cable to transfer the footage to your PC. Your PC will also need to be 'FireWire' enabled - you'll need to buy a FireWire card for your PC.
Ideally to edit footage, your PC will need to be a Pentium III or higher and have a high processing speed - not sure of exact minimum. You'll also need to have a good hard disk and RAM - again not sure of the exact requirements but What Camcorder (January) features a letter about this.
To burn your footage onto a DVD-R/RW, you'll obviously need a writer in case you don't have one with a speed of about 2x.
Software wise, you'll need editing software which the camcorder may come with - other good packages are Adobe After Effects, Adobe Premiere and Pinnacle Studio.