Back to let all of you who gave me your very helpful advice know that all of the Myst games are now installed on my laptop (Win 7 home) computer. While performing the installations I did have a /doh moment though. I remembered that I had purchased realMyst for PC through Big Fish Games for my desktop. So I downloaded that instead of installing Myst Masterpiece.
All of the games work great with one exception.....
I started Riven and got a quick glimpse of Atrus before finding myself in the "unlocked" trap cell. I nosed around and found the guard I should have seen through bars lying on the cliff below. Is this the only glitch or will I be getting more? (the 10th Anniversary version is installed with QuickTime 6.3)
Again - thanks ever so much for all of your help
Kero