G'day Shackman,
RE the RAM problem. I couldn't locate the motherboard model on the Gigabyte site - are you sure of the numbers?

It sounds like you have incompatible memory. It isn't so much a brand issue as it is a TYPE issue, and possibly a speed issue. If you check the existing memory you should (hopefully) find some markings like PC-100 or PC-2100 or perhaps DDR400 (DDR400 = PC3200) or some such - you need to match this figure - NB this is not an amount of RAM but a specification.

PC133 was the fastest SDRAM spec, faster RAM EG PC1600 and above is DDR SDRAM - the two specs are not truly compatible. If your new RAM is DDR and the board only uses SDRAM then you will get errors. Or, if the new RAM is SDRAM and you should have DDR then you will likely also have problems.

All that said, Manning is correct. If you want to upgrade, 5 years is a good age to do a new machine. However, if money is an object, then RAM is still comparatively cheap, you just need the right RAM.

If you can confirm the model of the MB I can check what you need if you like, though from the CPU I would guess DDR400 / PC3200

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