MS Access 97
Create a new query for the Row Source property where the first returned value will be used to label the x-axis and each additional field will be a series in the graph.
When displayed as an xy plot, the first field will be the x-values and each additional field will represent a series.
SELECT Gas.Date, Gas.[Price/Gal] FROM Gas ORDER BY Gas.Date;
Now you need to double click the chart component - this starts Microsoft Graph. From the menu, select Data / Series in Columns. (On my system, the default is Data / Series in rows.)
Series in Columns causes each value in the select statement to be treated as a series.
Visual Basic 6.0