Thanks! I'm glad you like it! This is a simple little Windows thing I'm making to play around with when I'm bored. I made one on the TI-86 too. If you'd like it, I'll have to see if I can find a copy. I think there's one in some archive on the internet.
This is all in BASIC, no C I'm afraid. It works a lot like the TI-86 one I made earlier--it loads pictures onto the graph screen for things like the Desktop, "Stop" menu, and other windows. It only uses up 4 or 5 pictures. While it's kind of cheesy to just recall a picture, it seems to work and perform faster than drawing it from the program on the graph screen.
Like other BASIC shells, this won't be all that useful for practical purposes. Maybe, when I'm done, I'll implement "special" features from the TI-86 edition such as "Auto-Crash", "Vex-Evil Antivirus", and "Internet Exploder" to "enhance" the calculator Windows experience. But it's still funny to play around with. Guess it makes a good toy.