Windows XP Pro OEM or Retail Version

You have to buy at least one piece of hardware (eg. harddisk, mobo or CPU that usually depends on where you buy it) in order to get OEM version which Microsoft sells to computer manufacturers. Furthermore, Microsoft does not provide support to it.
If you already have earlier version of Windows (Win 98, Win98 SE, ME, 2000 or XP Home), you should get the upgrade version. It is the same as Full version.

Good or Bad have no meaning at all, depends on what your point of view is.

And what's wrong with a clean install? That's what I prefer!
As far as calling MS goes, who needs them! If you have troubles, you can always post here.
You can still get all the updates and everything with the OEM version. The only real difference I can tell is that it didn't come in a big box or have a manual.
The hardware that you have to buy can be a $2 mouse if you want, some sites include it in the price.
I got an OEM XP home a little over a year ago, and haven't had any problems at all with it.

Peace comes only after absolute victory

I'd still rather find my answers online through forums than deal with Microsoft. I give them enough money as it is lol.

The aim of military training is not just to prepare men for battle, but to make them long for it. <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=327&s" target="_new"><b>MY SYSTEM</b></A>

What happens if you buy a legal copy of Windows XP Pro OEM, yet chose to install a copy of Windows XP Pro Corporate Edition which doesn't require activation.

I just don't want to have to ask Microsoft for permission every time I reinstall my OS, or switch motherboards.

If I own a legal copy of WinXp, but install from an illegal copy out of privacy concerns where does that put me legally.

Well since I didn't use product activation Microsoft will have a hard time tracking me down for the arrest.

I was joking. I just forgot to smile. Thinking of Microsofts business practices often has that effect on me.