MAC Users, I Need Your Help.

I plan to release a Poser freebie early next month. I have heard things that suggest that a normal PC type installation, where a zip file is extracted in the main Poser folder, installing files to the appropriate folders,  can cause problems on a MAC. Possibly even trash the Runtime folder. I know nothing about the Mackintosh OS (OS's ?). Can someone please tell me what installation instructions I can give to MAC users, so that the files install safely? Any links to tutorials on this?