Get the cheaper of the 2. Whether PC3200, PC2700, or PC2100 you will be fine as long as they match. If they don't match, they will default to the least common denominator and operate at the lower level.
Thanks for the response. The pc2700 and the pc3200 are priced the same.
I'm not sure of the correct terminology to use, but I am wondering if the pc3200 will actually preform better, or at a faster speed than the pc2700. What determines what the optimun memory I can use for this computer?