i just installed windows 7 using parallels and i cant seeem to get d2 to install. when i insert the install disc and click on installer it asks me what program i would like to open d2 installer with. when i copy the installed folder on my mac over to windows 7 and try to open the game that way it does the same. i have home premium if that helps.

is the file extension of the installer a .exe?
if not, what is it?
mac uses different file extensions than windows

I am not sure if you tried this but if you didn't its worth looking at it http://forums.d2jsp.org/topic.php?t=38497466&f=21