Help me please! (ASP)

I have a jump menu on an ASP page which retrieves values of the field “Serial Numbers” from an MS Access database. Once a particular serial number is selected it is supposed to take the user to another page where the values are retrieved from a different table which has the same serial number as selected previously.
I have managed to retrieve the Serial numbers from the database in the first page and also managed to send the user to the other page. But how do I retrieve the values of the same serial number from the database in this page?
In other words, how do I send the selected serial number’s value from the previous page to the new one?
Someone help me please!!