Plug in the make and model of the system and it will tell you exactly
what memory is guaranteed to work in your system. For this one,
assuming it's just a ThinkPad 600 (and not a 600E or 600X) then you
are limited to 2 x 128MB SO-DIMMs. 256MB modules will not work.
hilla <underscore> 20 <at> yahoo <dot> ca