Sounds like you're one of the guys that suffered from those horrible capacitor problems that started around 2002 resulting from incomplete intellectual property theft of original designs. The electrolyte solution wasn't done right on capacitors made from these stolen designs, causing leakage and burst capacitors. Hard luck, mate.
Some vendors have a replacement program for boards that failed due to these problems; you may wish to check this out. Unlikely you'll get a replacement but you never know.
Doctor Deaf, I'd like to know whish MSI board you're using. I've had excellent luck with my K7N2 Delta-ILSR, which has every feature in the book for a price of about $110 for the board. Serial ATA, Firewire, optical audio, and all the rest, this board has everything an NForce2 board should. If you're talking about NVidia's Nforce2 IDE drivers, stick with Microsoft's; most people who have used the Nvidia drivers have reported problems with DVD burning, no matter whose NForce2 board they've used.
For an even better upgrade, shuck the Athlon XP processor, buy an Athlon XP Mobile 2500+ and as their multiplier is unlocked, you can fool with the bus speed and multiplier to create one heck of a fast system.