My comp died back in Aug. I bought a new HP Pavilion Slimline with the Win 7 upgrade when released. So, I have been limping along for the last 2 months, not wanting to put much effort into it, just to have it wiped out with the upgrade. I received the disks Tuesday, did the upgrade last night, easy as pie. Heck, I didn't lose any information and the only incompatible programs were some dumb Wild Tangent games that HP had put on it.