I had a note the other day from the crucial memory folks. They have an on-line memory evaluation tool which will check the current chips installed in your machine, and recommend upgrades. I was interested to see that both my desktop and laptop had about half of what I would have guessed, 1 megabyte and 512Kb respectively, and it would cost about $140.00 to bring my desktop machine up to 2 gigs, and $185 to bring my laptop up to 1 gig.