Executing a stored procedure under another windows user

[system243trd]

I have an access database that is linked to SQL Server. I need one stored procedure to be executed using another Windows user's credentials. The permissions on the SQL server have all been assigned so that this user can execute the procedure. I need to identify some way using VBA on how the procedure can executed using another Windows login.

[pbaldy]

How are you executing? I would think you can specify the user in the connection string.