WORD OF WARNING!!!!!!!
If you participate in the windows vista craze and have a HP computer you will not have sound drivers after your update if you lose your hard drive like I did. This loss is fixed if you have the 32 bit version of vista but not with the 64 bit version (I have both). HP does not have a driver at this time for the 64 bit version.
Also make sure you update your BIOS after you update the OS. The 64 bit version will not work for this either but the 32 bit version should be fine...If it isn't I will inform you tomorrow