Hey guys, sorry if this has been answered. Got my Snow Leopard disk in the mail today, and am ready to install it on my MacBook Pro. However, I'm concerned with the compatibility with some things. I use my computer for work, and if certain things don't work anymore, then I don't want to install it just yet. Is there a way to downgrade back to Leopard if I find that some of the things I need to do are incompatible? Without losing all of my stuff and having to do a fresh install? Thanks in advance.