@bobizkewl , when you download CC for Sims 2, the CC (unless otherwise noted by the creator) should show as the following formats ("CC name.sims2pack" or "CC name.package"). When you have the Aspyr Package Installer program loaded make sure it points directly to your Downloads folder in your Sims 2 folder. The Sims 2 files for the Mac are hidden in your Library folder instead of in the Documents folder.
To find your Library folder, click on your Desktop, find the "Go" command at the top in the Finder, hold your cursor button over Go and press the Option key on your keyboard and Library will show when you do that. Scroll through the Library folders until you find one called "com.aspyr.sims2.appstore" and open the folder. You should see two files in there and open the Data File. From there, locate another file named "Library" and then in that file you should should find another Aspyr folder which when opened will reveal the Sims 2 folder (exactly like the original game and on the Windows side). From there check to see if you have a folder named "Downloads" and if you do not, simply create one. This is where all your CC and Mods will be stored.
My advice is to organize your CC into categories within this folder once you get it up and running.
If your CC has the ".sims2pack" extension, you will have to use the Package Installer to "uncompress" the file to now show the ".Package" extension. All CC in the game must have the ".package" extension to run.
Please let me know if this works for you. I copy and pasted this from the first page of this thread. If you have any additional questions, please feel free to ask.