This is what I did... I took out my 120gb drive with leopard installed. Everything was perfect. I took out that original 120gb drive and put it in an external USB enclosure. I installed the new 320GB western digital drive as soon as the UPS man stopped by. I booted up the machine to my external drive (the 120gb drive i just took out of the machine), booted great! Just as if the drive was still installed internally. Everything works. I erased the internal drive in disk utility in Mac OS Extended (same as original). I started up the latest version of Carbon Copy Cloner... Chose the external as the original, chose the internal as the destination. Copied 95Gb of data successfully. Restarted. The system didn't want to boot to the internal drive that was just cloned to. So I had to "bless" the internal hard drive. I followed some guides, i'm thinking I must have done it right as it DOES boot just fine now! Everything is great, boots great to my new internal, everything is back to the way I was with the old drive, a perfect clone.. I'm back at my desktop, my settings, my everything of my account... other than a few ... odd issues. ONLY IN MY ACCOUNT: Preview will NOT open files. AT ALL. Photoshop will NOT load "disk unavailable" error. Software update will scan for software updates for about 1.5 min and then say "Your Computer is up to date,etc." ---- I created a temporary "test" account. Logged in, Preview works perfectly fine, Photoshop launches without errors, and software update detects what software needs updates all by it self. Something on my "steve" user account is messed up, permissions? Where? how? Anyone had experience with this? I don't want to have to do an archive install, can I just FIX my account somehow because everything is perfect in the root and the account I just made... I don't want to loose any preferences and software libraries along with everything else all my applications rely on in my "steve" user file. thanks. -steve!