Microsoft Dynamics POS - Cannot Log in

We are using MS Dynamics  2.5.3099.0 with SP2 installed

The problem began with a virus, we have a very good computer guy who got the viru off. Then we ran into a problem where the SQL server instance for the POS system to work. This ended up being a permissions issue caused by the removal of the virus. We got that to work by changing the account that the SQL service uses to "local system" this worked and the sql server started up perfectly. We went to log into Dynamics POS and were re-directed to the password setup wizard. This is confusing because we were all already setup in the system. But we tried to continue anyway, but for each employee that I try to set a new passwiord for it errors out with the following error:

 

"Could not log in store owner from Store Setup Wizard"


Details:

Microsoft.Rms.Security.Authentication.LoginException: Unable to authenticate user. ---> Microsoft.Rms.BaseServices.Core.Security.UserNotAuthenticException: The user HNMEDIATE was rejected by authentication provider Possum.
   at Microsoft.Rms.BaseServices.Core.Security.RmsUserIdentity.CreateRmsUserIdentity(ApplicationMode mode, String server, String username, String password, IClearTextAuthenticationProvider authenticationProvider)
   at Microsoft.Rms.Security.Authentication.AuthenticationManager.LoginUserWithCredentials(String userName, String password, Boolean validateOnly, Int32& userId)
   --- End of inner exception stack trace ---
   at Microsoft.Rms.Security.Authentication.AuthenticationManager.LoginUserWithCredentials(String userName, String password, Boolean validateOnly, Int32& userId)
   at Microsoft.Rms.UI.Common.Process.Controllers.StoreSetupWizardController.SaveOwner()

 

- we cannot get past this wizard and are unable to use the system.

Thank You for your help!