2007 to 2009 upgrade activation issues?

We currently have five seats of 2007. All five seats wereinstalled using the same installation discs, serial numbers, andregistration codes. Now we want to upgrade to 2009 and I'mconcerned that we might have issues during activation.

Will it be good enough to enter new serial numbers in theinstallation manager startup box, or should we completely uninstallSW to clear the registry and then reinstall 2009 from scratch?

Also, we only recieved four 2009 upgrade kits from SolidWorks(instead of five). Any problems with using the same disc to installthe upgrade on two different computers? We would still inputdifferent serial numbers for each installation.

Thanks in advance. I'm no CAD manager and I want to make sure theupgrade is as painless as possible.

Ryan
SolidworksAdministration