I just retrieved a G4 (1.67GHz), 1GB, 100GB Powerbook G4 that has been unused for several years. I haven't stayed current in the Mac world so I'd appreciate some info. - Should I be able to upgrade to the latest OSX version without any troubles? - Should I be able to run parallels and XP with this? Will it be horribly sluggish because of the older processor or will it work OK with, say, MS Office. - Is it likely to run MS Office 2008 without difficulties? Thanks.