Hello All, I have recently purchased quite an old Dell Dimension 2400 which I think is about 3 years old. It currently has 768 meg of RAM installed and im looking to upgrade it with this : http://cgi.ebay.com/2GB-PC2-5300-667-DDR2-PC2-5400-240PIN-2-X-1-GB-G-GO-RAM_W0QQitemZ270105763728QQihZ017QQcategoryZ74942QQrdZ1QQcmdZViewItem But I am unsure wether or not it will fit...I know that the Dell manual tells you what RAM is compatible but I purchased this second hand and have no manuals to go by. I do want 2GB so that I can run Vista smoothly so if this doesnt fit can anyone point me to somewhere I can get a 2GB RAM stick for Dimension 2400 if at all possible, if not well then second best will do. Thanks in advance for any input. Derek.