I'll first start out by saying I am new to Macs. Just finally got fed up with Microsoft and all the bugs. That said, I need to load a piece of software, and am having issues! I'm looking to load Osirix - it's a free software to view CTs, etc in DICOM format. I downloaded the zip file of 3.2, and unzipped it, and see the OsiriX.pkg file. But, I am stuck at this point. If I drag into the applications, it doesn't do anything, so I'm obviously missing a step. Any help would be greatly appreciated, as I need to create a presentation for work this weekend. I have a Mac OS X 10.4.10. 2 Gig Ram, 2.2 Ghz Core Duo. Thanks in advance for your help!!!