Windows CDs - Full Versions, OEMS, Upgrade editions :S

Hi all, hope you're well.

Here's my problem. I have Win98, first edition, installed on this computer. I also have a CD of Win98, second edition, full version. The thing is, the Installation program won't allow me to UPGRADE my Win98FE to the Win98SE because the CD is the Full Version CD and not an Upgrade... the installation files are EXACTLY the same, so is there a cunning way around this?

I should note that the Win98SE CD is NOT copied.

Thanks in advance for any help.

Google is your friend.
Upgrade with full version :D