I'm planning on this, and although I've done it before, it was years ago and the OS in question was Windows 98 Since I do a lot of other stuff on this computer as well like play games, waste time on the internet, photo editing and all that, plus it's a shared thing with my missus. During the first few months of win 7 it was amazingly fast and I couldnt get the CPU to choke whatever I threw at it production wise. Recently it has slowed down, boot times have grown etc. Win 7 is definately the way to go for me, and I'd like to keep my production OS as clean as possible, without network connection, firewalls etc. So i think in this case the only option is to have 2 installs of windows. Googling this stuff up atm. Anyone done this before, have any tips or advice or useful links?