Christie --
Yes. Ask your Project Server administrator to do the following:
1. Log into PWA with administrator permissions
2. Click Admin - Server Configuration
3. In the Features grid, set the Account Creation permission to Deny
4. Click the Save Changes button
He/she will also need to delete the user accounts that were created
automatically by clicking Admin - Clean Up Project Server Database. Also,
refer to the following FAQ for the steps needed to properly use local
resources (resources you type in the Resource Sheet view of any project):
http://www.projectserverexperts.com/Shared Documents/UseLocalResource.htm
Hope this helps.