Adul: I'd also like that info if possible. Thanks
Windogg: a few suggestions:
1) I'd suggest some caution with the hub plan: after a few days people are bound to complain to somebody higher than you, and if it goes on too long, they'll probably consider you incapable and hire someone else to fix your problems, and if that happens the plot will be discovered. An on/off switch would be recommended (if it's possible to get a remote-controllable UPS), and time the slowdowns strategically (e.g. when you hear someone saying "damn, I need to finish this report ASAP"

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2) Why have the p75's ping each other? set up a few to ping the annoyers. Or get some "network monitoring utilities"...the fun ones, not the legal ones, e.g. Backorifice, etc. When their boss is passing by, make a porn page come up and lock up their computer. If their first instinct is to press Alt-f4, they probably won't have time for a second one.
3) Set up the associations for whatever document type they use to to open up a web browser to a porn site. If they have IE, the following association should work:
"C:\PROGRA~1\INTERN~1\iexplore.exe"
http://www.pornstars.com/
4) Combine #2 and #3 for some fun. Make their program "crash" before their boss comes by. Before they re-open it, change their associations (this will probably require exporting a .reg file with the association on it to their computer and just running that), and when they try to re-open it as their boss comes by, they're in for a heart-stopping shock.
Think I have what it takes to join the IT manager community?