Sadly, this may be part of your corporate culture. It's up to you to decide if you're up to the task of educating and remaking the the entire culture. A friend worked for a small software bioinformatics company that got bought by a hardware maker who wanted to branch out into this nacent market. Unfortunately, their entire company culture viewed software development as overhead and something they just gave away with the hardware. It took them three years to mismanage the new (and last) release, outsource development to India, and drive away key people. When three developers announced their resignations on the same day (they didn't know the others were looking), senior management had a collective "oh shit". They ended up shuttering the remains of the company.
If you can't educate and enlighten management to tell the difference between the help desk and key developers, then I think you should look for someplace else.
MacOS X 10.5 ships with BootCamp which can boot a Windows partition (Parallels and Fusion can use this partition for their copy of Windows) and run it instead of MacOS X.
There are two commercially available to run Windows on MacOS X. Parallels and VMware's Fusion both require a commercial FULL RETAIL copy of Windows to run a Windows application in a virtual environment (not emulation).
There's also Crossover for Macintosh that can run _some_ Windows applications like Office without installing Windows.
The Linux users are out of luck it seems, but if you use SPICE instead of your Windows-only solution, everyone wins.
Some colleges require you to live on campus for the first year. During that time, you'll have to "suck it up" and live with the networking restrictions. Or switch to a computer and OS they don't support, like MacOS 9 or CPM or RT-11 or whatever to ensure you have the privacy you need. Or just don't use the computer (or the phone) for anything you don't want anyone to know about. If the school requires you to run an OS that they support, then you have your answer. For more ideas along this vein, read Cory Doctorow's Little Brother:
http://www.amazon.com/Little-Brother-Cory-Doctorow/dp/0765319853
Some colleges are really worried about the infringing material on their networks and applying some rather heavy handed response. Yours seems to focusing on prevention rather than assuming the students are adults and capable of making their own choices and dealing with the consequences. There's a fine line between "policing" and "fascism". Your college crossed it, IMO. If they require the dorm resident advisors to search your room periodically for "contraband", then I think you have to find another college or a good lawyer to fight it.
Take physical notes with pen, paper, and notebook--it uses a different part of your brain than typing. I still can't actively listen to a lecture and type note. I have to take them by hand. A client told me about Lightscribe, a pen computer which he uses for meetings and downloads what he wrote to his computer later:
http://www.amazon.com/Livescribe-2GB-Pulse-Smartpen-APA-00002/dp/B001AAN4PW
I bought a bunch of _paper_ and office supplies, maybe about $50 worth or so. The sales associate kept insisting that I had to apply for a Office Max preferred customer card but I kept refusing. I said I rather buy the stuff elsewhere than give them my personal info. He finally shut up. I paid cash and walked out.
I get the same thing with Safeway whenever I pick up something there.
I worked in an environment like this--500+ "desktops" running a mix of Solaris64, Solaris, SCO, SunOS, and HP/UX). We used cfengine, automounter, and a bunch of file servers for the different environments (compilers, perl, GNU utilities, etc.) NIS tied it all together. This was back in 1996. Why is this so hard for the OP _today_? If some marketing weenie needs Powerpoint, can't they run that on Wine?
Actually, M$ is opening itself up to lots of litegation in the UK and Europe. They better backpedle on this position i-fucking-mediately or they'll risk having XBoxLive banned in lots of European countries.
"Engineering without management is art." -- Jeff Johnson