Yes, just create a web part within MOSS that has the URL of the views you
wish to see. Note you might want to use the simpleUI parameter so that you
just get the informatation you want. note also the project server security
permissions will still apply, so the users must have the rights to view the
information in PS (and of course the licences).
If you haven't come across SimpleUI, Tony Zink blogged it, and it's well
documented by MS.