Hi SMIV. Radek is almost on the ball. In WIN 98 you can exit the program using ctrl-alt-del most of the time. Do this and then use Alt-Tab, then press the down arrow, and press Enter. Basically the mouse is controlled exlusively by W&W when you are playing it in full window mode only. Although you can't see it, with the above process you are able to exit the program, using the Close Program window. And yes, you can't swap in WIN 98, but this is std for WIN 98 with any of these sort of programs.
The simple test of a completely frozen system is to press the Num-Lock key. If it's frozen, the keyboard led for the Num-Lock won't turn on/off. THEN you need to press the "special" button.