MOSS Form Authentication -- EXECUTE permission denied on object 'aspnet_CheckSchemaVersion', database 'aspnetdb', schema 'dbo'

When enabled form authentication in my MOSS 2007 i'm getting "EXECUTE permission denied on object 'aspnet_CheckSchemaVersion', database 'aspnetdb', schema 'dbo'"

Later exploring the problem and found the solution. By executing the following SQL commands will solve the problem.

USE aspnetdb
GO
sp_addrolemember 'aspnet_Membership_FullAccess', 'Network Service'

“Network Service” is your user name.