PS CS3 Upgrade

[Cabin]

Hello,
I have a copy of CS2 that I never installed.
Do I need to install CS2 before upgrading to CS3 or will CS3 prompt for a serial number?

Thanks a bunch

 

[dmwphoto]

It may ask you to inset that disc for verification but no, you do not have to install it.

 

[Cabin]

Thanks Dave,
Just what I needed to know