In a similar spirit, another very useful Windows tool is Windows Keyboard Layout Creator. I first started by editing the US English keyboard to have an AltGr key which produced Turkish letters like ğ and Ş, and just recently I added a Greek dead key which lets me type α, γ, Ω etc with two keystrokes. What's really nice is that the usual keyboard is a single Win+Space away so my friends don't need to struggle when using my PC.