Warrenton,
I agree with Mindless. If you do get permission to install RC5 on your dad's work PCs, I would suggest setting up a proxy server (it doesn't take much resources, mine is running on a P233 with 64M Ram)
to keep that large a herd fed.
If you need help getting permission at your dad's work, or if the IT guys have questions, post here. I'm sure there would be some Network Admins who would be more than willing to talk to them about how little bandwidth the client uses, security concerns, etc.
Prepare yourself with the facts so that you can show them it is a legitimate undertaking, that the client is very stable and is set at the lowest priority, so work apps will get access first, etc.
Approach them in a professional manner. Even with that, they may still say no.
And if they do say no, you are still very
Welcome and everything you contribute will help the team out!
