If you installed YatZoo! using the installation program, all you have to do is run the un-install program in the control panel. If your not sure, go there anyway.
Directions: Press the start button and go to settings, select control panel. From the control panel double click on the Add/Remove programs. Scroll through the list of programs and select Yatzoo!. Click the Add/Remove button and allow the program to remove all the files. That's it! YatZoo! is now uninstalled.
If you downloaded the zip file and installed YatZoo! by hand, you have to delete everything yourself.
Directions: Start Windows Explorer and go to the directory you installed the game. Highlight and delete all the files there. Now you must also remove all the registry keys in the system. (Caution: Always back up the registry before making changes! - If editing the Registry scares or intimidates you then just skip the last step, its not harmful) Press the Start button and select Run... When the Run Programs window pops up, type regedit in the open edit box. Press ok. Double click on "HKEY_LOCAL_MACHINE" and then "SOFTWARE". Scroll down the Registry list and find the key "ParcPlace" and select it. You should see a similar screen as the one below. Double check to make sure that you have the right key selected and press delete. Finally press "Yes" when Windows asks you if you are sure you want to delete this key. And that's it. YatZoo! is completely uninstalled from your system.