anti-virus - may i suggest computer associate's etrust inoculateIT (
www.ca.com). It's been my experience that this scanner will pick up viruses in real-time that norton won't (default configuration will need to changed). Also, you get free updates for life!!!
Office - nice if you got the cash, but on every pc i build now i throw on OpenOffice.org (
www.openoffice.org)...because its free!!! There are differences and while i've never deeply explored it, it should have the same functionality.
HD - every think of RAID or a backup solution? It would be a ***** to lose corporate data.