It is important to note that not every Intel-based Mac is supported. In order to upgrade, you must have:
Not every Mac that runs 10.7 Lion will run 10.8 Mountain Lion.
Sometimes, when supporting or upgrading a Mac, it’s not enough to know it’s an iMac or a MacBook, but rather which iMac or MacBook. This information can be very useful to determine compatibility and locate the appropriate resources. OS X 10.7 Lion will actually identify your Mac model under "About this Mac" from the Apple Menu:
“How do I know which model I have?”
Going to the mall - even if your favorite computer store is there - can be like going to the dentist. Enter a great new plan called Personal Pickup. Make your purchase at the Apple Online Store or from the Apple Store app on your iPhone or iPod touch. Select “pick up” when you check out, then stop by your favorite Apple Retail Store to pick up your order in person. Apple takes it as step further in that you can get a personal setup appointment when you come in to the store for your order. Absolute genius, from a customer service standpoint, but today we learned that if you want your friendly neighborhood Apple Consultant to pick the order up for you, you must indicate that a third party will be picking it up at time-of-order.
Everybody hates crowds and parking hassles.