not true, always judge a machine on its spec, the badge on the front is irrelevent.

The problem will machines like packard bell, is that they dont come with a real windows intall disk, just a recovery disk, so you can use that to reset you computer, or if you want a true clean install....

on your case somwhere will be a windows XP licence number ( on a holographic sticker)
If you download a windows XP OEM edition CD from pirate bay or somwhere, this will work as an origeonal XP disk, just use your licence number to register it.