RAM addition...

[Shovelhead]

Keep in mind that anything that's old enough to have 128mb sticks of DDR is also probably so old you won't notice a difference after adding any amount over the existing 512 meg, especially for office/email type use. Taking that thought a bit further, it's also unlikely that the motherboard supports dual channel memory which means that pairing is less important.

The "old" DDR costs more than the current DDR2 - sometimes twice the price for the same amount of memory.

I'll benchmark it and let yous know.