Retrieving Data from an Access Database

VWD 2008 Express.  Visual Basic.
I know how to create an AccessDataSource on my aspx page and how to use the datasource to populate gridviews, etc.  But I want to know how I can programmatically populate a dataset by querying an Access database.  How do I make queries to an Access database programmatically?  Code samples will be greatly appreciated.  Thanks.
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