[A friend and I would like to play Myst V 'together' although remotely. Is there a way to do this? Or at a minimum, does anyone know if we can somehow share the program in a window that one person controls while the other watches?
I have never tried it but I beleive it could be possible. Try a Google search for "Remote assistance plus your operating system's version". Be aware that it will give access & control of your computer to the person giving assistance (or vice versa) (and no more intimity unless you really know what you are doing). It is the person giving assistance that will control the other person's computer.
I do not know if it will work if both of you are using a different operating system version.
Btw, I am not giving you a link because I use a french version of Windows XP and the Microsoft site will not give me access to english pages.