Help! How do I retrieve passwords from the ms access through c#.net?

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Ok the thing is I wasn't able to hear my professor's discussion with regards to this and if I won't know how to, I'm doomed. The data provider is ODBC and we're using MS Access 2007. We are asked to make a form for login and we have to retrieve it through the database to confirm if the username and password is correct. I'm sorry if I have to post it here but I'm just to desperate right now. The deadline is on Tuesday. Help please! Thanks