I just don't want to mess this up. MBP (5,1)17'' Mac OS X, 10.6.8 2.66 GHz Intel Core 2 Duo 4GB 1067 DDR3 I looked for threads in search for an hour, so i'm sorry for such a Easy button push question. Running on Snow Leopard now and i'm getting ready to install Lion from App Store at home, and want to know if all i really have to do is hit Upgrade now? The main thing i seen, was afterwards, Options+Startup and repair disc permissions using "disc utility" So, other than that, if all runs great. Is that about it.