Using Parental Controls and Wacom Tablets

I work in a public library and we have 3 eMacs and an older iMac that we would like to use with Wacom Tablets. When I first upgraded them to Leopard they worked great but somewhere along the way the tablets quit working in the public user account that has Parental Controls on it.

I've found suggestions on the Apple Communities Forums and Wacom Forums and none of them are working. Here's what I've done:

1. Found the driver and added it to the P Control Panel under "Other", it is checked to allow the software for the user.

2. I found the Preferences Pane and allowed full rights to that file for the user.

3. Found Wacom Tablet Preferences and allowed full righte to the user there too.

I'm running out of ideas. Anyone got s clue what I can do?