Hi. I'll be receiving my new Unibody 17" MBP by Feb 9th. I am considering to upgrade the memory myself from 4GB (2 x 2GB sticks) it comes with to 8GB (2 x 4gb sticks). Considering my notebook usage below, do you think I will see a significant (if any) speed boost in my notebook? I use my notebook to do all the following at the same time: -Open about 5-6 website tabs while surfing the web -Use AOL, Yahoo, and MSN messenger for chatting -Type on MS Word for MAC -or- Pages -Watch video clips on Youtube -or- iTunes music videos -Open 1 virtualization program (XP) via VMWARE Fusion 2.0 (by the way, if I allocate 2GB of my 4GB to fusion, do I still have all 4GB to use on OSX if im not using the vmware fusion at that moment? What if im running fusion and I only am using 1GB of the 2GB allocated for fusion, will I be able to use the 3GB remaining for OSX even if each system is allocated 2GB each?) I'm also installing the 500GB Seagate 7200.4 HDD once I receive the new MBP too. So if im doing all of the following at the same time as listed above, do you think i'll see any performance difference or will ever need/use 8GB of memory.. or should I just stick with 4GB? Money is not an issue, its just a matter of if I need it or if the money will be a waste in my situation.. Thanks!