Windows Vista OEM vs. Retail

[Jazz_Data]

You're also not supposed to sell OEM without hardware...

And an oem license cannot be transfered from one system to the other, legally...

[zanzabar]

You're also not supposed to sell OEM without hardware...

And an oem license cannot be transfered from one system to the other, legally...

u can buy oem to go with a recently purchased system at the same place as u bought hardware (i dont remember the time frame)

read your terms and condition for vista, the following quotes are from the vista biz/ulti oem terms

2. INSTALLATION AND USE RIGHTS. Before you use the software under a license, you must assign that license to one device (physical hardware system). That device is the “licensed device.” A hardware partition or blade is considered to be a separate device.
a. Licensed Device. You may install one copy of the software on the licensed device. You may use the software on up to two processors on that device at one time. Except as provided in the Storage and Network Use sections below, you may not use the software on any other device.

15. REASSIGN TO ANOTHER DEVICE.
a. Software Other than Windows Anytime Upgrade. You may uninstall the software and install it on another device for your use. You may not do so to share this license between devices.

so one at a time, so long as one device has it u are fine, ut only one licensed device per key

and under section 2

c. Alternative Versions. The software may include more than one version, such as 32-bit and 64-bit. You may use only one version at one time.

u are also allowed unlimited virtual copies on that device

3.f. Use with Virtualization Technologies. You may use the software installed on the licensed device within a virtual (or otherwise emulated) hardware system. If you do so, you may not play or access content or use applications protected by any Microsoft digital, information or enterprise rights management technology or other Microsoft rights management services or use BitLocker. We advise against playing or accessing content or using applications protected by other digital, information or enterprise rights management technology or other rights management services or using full volume disk drive encryption.