Script to Delete local roaming profiles

Hi

I have a windows 2003 server with xp workstations. We use Roaming profiles that copy themselves to the local machine. I want to reconfigure the way profiles work in AD and create a new default user. In order for this to work i need to wipe all local profiles on the machines which is a big job ( 150 workstations ) but exclude profiles such as “all users” “administrator” “default user”….. Does anyone no of a script that i can run that will delete all profiles in documents and settings except the ones i need?

Please help 🙂