64-bit or 32-bit? I need to run graphics software such as Adobe Master Collection CS3 and MS Office Publisher. What do I need ot make this work?
In terms of Ubuntu most would advise you start with the 64 bit version.
In terms of running your Adobe and Microsoft applications, I would either use Linux native alternates, dual boot with windows, or run windows in a virtual machine such as KVM, virtualbox, or VMware.