Byron -
This is copied from Microsoft's knowledge base:
1. Verify that you are typing the product key and that you are not typing
the CD-set number, the disc assembly number, or the part number.
The product key is located inside the disc case or on the back of the disc
sleeve on a rectangular sticker, and appears in the following format:
PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
2.Retype the product key. Make sure that you type it correctly.
Make sure that you type the correct characters. The following characters are
often confused:
..B and 8
..G and 6
..U and V
..Q and O
..The letter O and the number 0 (zero)
..The letter L and the number 1
3.Verify that you are using the product key with the