standard memory in those laptops is: 256 MB DDR SDRAM @ PC2700 333 MHz so look for that
Theres a bit more to it than that. Although both modules should be PC2700, you ought to match the CAS latencies as well (cas will be 2, 2.5 or 3) & whether you need unbuffered or ECC ram.
Also, I have found with some laptops and proprietry machines, that they tend to be far more twitchy about the ram they will work with.
If you want to guarantee you get the right stuff, then go to crucials website, link below :http://www.crucial.c...fgr.asp?cat=RAM
And run the memory advisor, either let it scan your system or select your make/model of laptop. They will then tell you what memory is guaranteed to work with your machine. Also, crucial is a good quality brand & not expensive direct from their website.