Installed grub (previously had grub-pc, yay?) so now I can get into the grub shell.
Step one is figuring out where Windows is, i.e. which partition. Answer format: (hd0,0) Actual answer:
I wonder whether I'll have any interesting errors when I next restart.
I was looking around for a way for my friend to get into her Ubuntu partition after forgetting her password (solved it, no worries) and found this thread, which I personally find amusing and pathetic in equal measure. http://ubuntuforums.org/archive/index.php/t-3609.html
I'm considering installing Wine for when I can safely hose my Windows partition, but it would almost certainly make more sense to just get a virtual box going. Anyway, a problem for the future.