Macs that can be upgraded to OS X Mountain Lion
- iMac (Mid 2007 or newer)
- MacBook (Late 2008 Aluminum, or Early 2009 or newer)
- MacBook Pro (Mid/Late 2007 or newer)
- MacBook Air (Late 2008 or newer)
- Mac mini (Early 2009 or newer)
- Mac Pro (Early 2008 or newer)
- Xserve (Early 2009)
I think you can try to download Mountain Lion from the App Store and if your computer isn't supported, you'll get an error message.
There are ways to make Snow Leopard work with iCloud. Unfortunately, my bookmarks for the "How to" are on my Snow Leopard partition and I'm in Mountain Lion. I found them by searching using a search engine. They provide limited integration.
They are Safari bookmarks and Snow Leopard Safari will open in Mountain Lion, but won't give you a window?????
Here are the bookmarks, since I'm now in Snow Leopard:
Advance warning - Mail worked fine.
I had fits with the last link I posted. At first it worked fine, then all of a sudden, it quit working. I now have iCloud - iCal syncing, but iCal is read only. Not a real big deal since you can log onto iCloud using Safari and post a new event.
I finally gave up on Address Book because it kept creating multiple contacts, which if you tried to merge or delete the multiple contacts, the contacts were deleted. It also worked at first and then stopped working as it should.