I've finally checked what ram i got in my Dell Dimension e531 AMD Athlon 64x2 Dual, Core Processor 5000+.
Got two 1gb sticks 2Rx8 PC2 4200U 444 Samsung sticks in it, and got two empty slots,
But i have no bloody clue what kind of memory i should buy for my comp if i should replace the two i got and buy two more so i got 4GB for vista after the summer.
Please give me some input

Checked around and DDR2 memory is quite cheap.
And you guys normally got good answers.