IT Policy

I have the lovely responsibility to create an IT policy for the company I work for. To give you some background: 55 workstations 1 server

I basically need to write an IT policy that consist out of the following.
Workstations – Hardware / Software / Data
Email – Virus / Spam
Internet – Usage / Security
I have read some articals on how to write policies and have a good idea of what to do, but I would like to hear from guys that has done this before.