In the past I used an old Pentium 4 running Gentoo to do N900 development. But that computer was too old and too crap to be worth spending the cost to bring it across the country when I moved house last xmas. So right now all I have is my main box (running Windows 7 x64). Whats the best way to get a dev environment going again so I can do some things beyond just reverse engineering with IDA?

Obtaining another box to use for dev isn't an option (no funds to make that happen), nor is dual-booting. What are my options? I dont need any kind of GUI in the dev environment as such, just the ability to stick source code in there, compile things etc. I dont need to be able to flash the device or otherwise deal with that side of things either (any loading of files I do can be done over SFTP/SSH)