I have installed Myst 4 on my only PC, the HP tablet TC1100 and it runs perfectly. The only problem is that I can't use my pen, I have to plug in a mouse. The pen is super sensitive and too hard to control, yet in Myst 1 it worked fine. Does anyone know a workaround for this problem? It's hard to work a mouse on a corduroy covered lovesac!

Have you tried lowering pointer speed and/or click speed in Mouse Properties? (Click on Start > Control Panel > Printers and Other Hardware > Mouse.)