You nailed it! Thanks for your help! I went into the registry and deleted all of the entries the script created regarding the screensaver and it worked, the screen did not time out. However, like you said, the damage is done, because after my celebrating, I logged in as another user and checked the registry, the entry is still there! Since I will have multiple users logging into these machines, I will not be able to effectively modify the registry for all of them so I'm afraid my only way to proceed is to create new VMs for these workstations and run the script with those entries removed. Unless you know of a way to modify the registry for all users (I am a registry novice). Luckily, I still have a few days before we go into full production to get this done.
Thanks again for your help!