I noticed about 10 minutes later that I was writing it "Noughts" instead of "Naughts" on here, and then saying "Naughts" everywhere else...
Talk about weird O_o
Went through and redid some code at school today, to stop player's using already taken squares. I think I ironed out some compatibility problems with XP also (I was coding a fair bit on my Vista machine)
I'll see if I can get it to work out a Tie system. Probably just a matter of getting it to count to 9...
EDIT:
The joys of version 0.2!
It now actually plays, and it now knows what a win is, it knows you can't take a square that's already taken and it can see if it's a draw
Note: I doubt this'll work on pre-NT operating systems, due to a number of features that I believe were only introduced after Windows NT (i.e. 2000, XP, Vista)
Feel free to try though, if you don't love your pc
Latest code put in first post