Separate names with a comma.
It's a known issue with the 'new and improved' Mac firewall. Try turning off firewall temporarily, reinstall Parallels and see if that fixes your...
You've just told us - you have a PowerBook G4, not a MacBook/MacBook Pro Intel. You need to have an Intel-based computer to run Parallels....
Yes, you must have Windows installed in Parallels first. Then install Office into Windows.