I have a Mac with Parallels installed, and I installed EQ5, which I have, but it didn't work. I was too frustrated to keep messing with it, because there are so many possible reasons for the misfire and no easy fixes. Perhaps my EQ is too old for my Mac's Windows? Sigh.
I have Parallels because there are some programs I need to use that are only PC-based, and they seem to work okay. I did get a game installed, but it works very slowly, so I still play it on the PC.
Hope that helps some!