Came across an ACER netbook to restore(new hdd) that came with win7 starter originally and thought i'd test it by using the retail OS links from the first page.
Sadly, it didnt preactivate like i thought it would, afterwards it showed i had three days to activate it, i thought the retail and oem disks were interchangeable when it came to manufacture machines, i guess its just applies to the serial numbers only.
Before the final install of the OS, it did ask for a serial number or given the choice to skip it to type in the serial at a later time, it did however automatically activate when an OEM disk was used, even though it did ask for a serial or to skip it as well towards the end of the install.
As you can see, these are NOT preactivated disk and i prefer it that way, of course, for temporary testing purposes only, one could use a win7 loader or slic2.1 modify their non oem BIOSes, which is not for me, too risky for my taste.
Again, since i restore original win7 oem machines, OEM disks are all i seek regardless of version or if 32bit or 64bit... retail disks do me no good, unless theres a way to convert a retail disk to an oem disk, which im sure is highly unlikely.