Doug wants to upgrade to Windows 7 or 8. He does audio recording with Audacity. Leo says that Windows 8 is essentially Windows 7 with a metro, tablet interface. Leo has taken Windows 8 and changed it to look like Windows 7 with a utility called StarDock. This is helpful because Windows 7 is getting harder to find, especially on a new computer. If he decides to get a touch screen computer, then Windows 8 is fine. If it's annoying for him, he can always get StarDock to make it work like Windows 7.
He could just get Windows 7 though. Leo says Home Premium would be sufficient. Microsoft makes it way too confusing than it needs to be with their 8 different versions. Should he get 64 or 32 bit? Leo says if he's got 4GB of RAM, go with 32 bit. If he has more RAM, he'll need 64 bit. The upgrade version is way cheaper than buying the full version.