We got upgrade copies of Dreamweaver 8 at work recently, which meant I could free up my personal copy of DW8 I installed at work. After trying to uninstall and reinstall, I quickly found there was no easy way to change the product key.

After many many attempts, I came up with a procedure in order to switch the product key in the installation.

1. Uninstall Dreamweaver 8
2. Delete/Rename this folder: C:\Documents and Settings\All
   Users\Application Data\Macromedia\Licensing\Products\Dreamweaver 8.0
3. Reinstall Dreamweaver 8

There may be an easier and quicker way to do this but I was unable to find a solution with my web searches.