IIS4 + MS Project Central

Have set up project central on IIS4, NT4, sp6a.

The project folder is shared as “project” with “everyone having full control.

The anon account has been set up as the Dom admin account, but on trying to get a “choose view” of the project we getthe following error

“An error occured while trying to access the project on the public share. Either the project is too large, or the Microsoft Project Central Server may not have access to this public share, or the share may not be available”
What am I missing ?