I have been playing around with video editing for about a year or so. Mainly been using Pinnacle Studio 9 but recently got Adobe Premier Pro 1.5 and looking to get into it seriously.

My current PC spec is as follows:
Motherboard - ASUS A7N8X-E Deluxe
HDD - Seagate Barracuda 7200.7 120GB 7200RPM 8MB cache.
AMD Athlon XP 3200 processor

However, I would like to upgrade my PC but am thinking its probably best to have a PC dedicated to video. As a result I am looking around to get some advice as to the best components to buy.

To date I have been looking at motherboards and processors. At present I am considering the Athlon 64x2 Dual Core 3800+ processor but unsure as to the best motherboard. Can anyone advise?

Also are there other things that I need to be aware of? I'm at the learning stage so my knowledge is limited. Many thanks.