I actually use WinRAR. I aqcuired it after many of the NWN (Neverwinter Nights) files came in that Format. The interface is not that much different from Window Explorer. In the file list, Double click on the File you wish to expand. This will bring you to a window that lists the files within the Zip. Above this window is a button that looks like a File folder names "Extract." You will want to click on this button. Now a new window will popup with a directory List. From here you will chose the directory in which you wish to install things, typically your Poser root directory. Tell it Ok and you are done. Now a little trick with WINRAR is that once you install a file once, the Program saves the last 10 locations you installed to. So if you go to install again, all you have to do is use the pull-down menu to chose your location rather than going through the file list. Let me know if you need further help with this.