odbc + sql problem

Anyone could please help me ?
I have a simple asp program connecting to sql7.0.
I have the system dsn setup already.
After I transfer everything from the old hard disk to new hard disk, I
cannot login through asp program anymore. Below is the error message but I
don't know why it has to do with the iusr account. Thanks a lot. (any image
of setup would be helpful)
Microsoft OLE DB Provider for ODBC Drivers (0x80040E4D)
[Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for
user
'CENTRAL\IUSR_CENTRAL'.So, the error message is that this user:
doesn't exist as a SQL login.
Microsoft OLE DB Provider for ODBC Drivers (0x80040E4D)
[Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for
user
'CENTRAL\IUSR_CENTRAL'.
175671 PRB: 80004005 ConnectionOpen (CreateFile()) Error Accessing SQL
http://support.microsoft.com/?id=175671
307002 PRB: ASP/ODBC/SQL Server Error 0x80040E4D "Login Failed for User
http://support.microsoft.com/?id=307002
176380 How To Use ASP with a SQL Trusted Connection with Guest Account
http://support.microsoft.com/?id=176380
Thanks,
Kevin McDonnell
Microsoft Corporation
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