Currently Being ModeratedJun 4, 2013 10:02 PM (in response to itsLuckySeVeN)
You won't lose anything upgrading to Snow Leopard. A Mac OS X upgrade keeps everything and most of the applications you have will work correctly in Snow Leopard. Just make a backup of your data before upgrading, so you will be sure that you won't lose anything if the upgrade doesn't finish correctly.
After upgrading OS X, open > Software Update, and install OS X 10.6.8. From there, you will be able to upgrade to Lion or Mountain Lion if you want, but Snow Leopard is still supported so there's no reason to upgrade unless you need a OS X Mountain Lion feature that is not available in Mac OS X Snow Leopard
Currently Being ModeratedJun 4, 2013 10:01 PM (in response to itsLuckySeVeN)
Not unless a problem occurs. Back up everything first.
Currently Being ModeratedJun 5, 2013 6:08 AM (in response to itsLuckySeVeN)
Currently Being ModeratedJun 10, 2013 9:49 AM (in response to itsLuckySeVeN)
Also note that Rosetta is no longer directly supported in Lion or Mt. Lion, so any further upgrades from Snow Leopard will complicate your ability to use PowerPC software that you might still own and operate.