I installed SQL 2012 trial version on my local Windows 7 64bit machine. The plan is to play with new MDS. The MDS installation was successful. I am able to see the MDM database where I am sysadmin. When I browse tourl:  http:billcool/mds I get the following error:

[SqlException (0x80131904): Login failed for user 'domain\billcool$'.]
   Microsoft.MasterDataServices.Core.DataAccess.DbHelper.ExecuteNonQueryHandlingTransportError(SqlCommand sqlCommand) +461
   Microsoft.MasterDataServices.Core.DataAccess.DbHelper.GetTimeout(String settingName) +231
   Microsoft.MasterDataServices.Core.DataAccess.DbHelper.SetConnection(String connectionString) +532
   Microsoft.MasterDataServices.Core.BusinessEntities.RequestContext.InitializeDatabaseContext() +117
   Microsoft.MasterDataServices.Core.BusinessEntities.RequestContext.InitializeRequestContext(HostContext hostContext) +95
   Microsoft.MasterDataServices.WebUI.ServiceAdapter.GetCurrentUser() +178
   Microsoft.MasterDataServices.WebUI.Common.Header.OnInit(EventArgs e) +294
   System.Web.UI.Control.InitRecursive(Control namingContainer) +186
   System.Web.UI.Control.InitRecursive(Control namingContainer) +421
   System.Web.UI.Control.InitRecursive(Control namingContainer) +421
   System.Web.UI.Control.InitRecursive(Control namingContainer) +421
   System.Web.UI.Control.InitRecursive(Control namingContainer) +421
   System.Web.UI.Control.InitRecursive(Control namingContainer) +421
   System.Web.UI.Control.InitRecursive(Control namingContainer) +421
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2098

Why it's showing a '$' sign after my name in login? Can anybody help resolve this?

 domain/billcool is a serveradmin and has all permissions to the sql server.

Thanks in advance for any help....