...64bit? I have a Toshiba Satellite P100-SD8 which came stock with 2GB of RAM. I checked the Toshiba website and my motherboard can use up to 4GB of RAM. I recently purchased two 2GB sticks to upgrade my memory. I found that I am running 32bit Windows XP Media Center which can only accomodate something like 3048MB of ram. I was told that I need to upgrade to Windows XP 64bit in order to use my 4GB or RAM. I decided to do so but before I do this I just wanted to check if there were any processor restrictions with 64bit XP. I have a Intel® Core 2 Duo processor T2500 2.0GHz. Will the 64bit XP have any problems running with this?