How do I retrieve a lost registration number

[Jettybean]

I bought a new computer. I purchased Office 2007 when I bought my OLD
computer three years ago. I can't find the disc. How do I find the
registration number?

 

[Mary Sauer]

Run the Belarc Advisor:
http://www.belarc.com/free_download.html

 

[DL]

Finding the Office Key on the old PC is not going to help you since you need
the installation disk
You cannot obtain a replacement disc from MS unless you have proof of
purchase, ie the receipt