I assume you are wanting to show more details about the row that is clicked on when they click the hyperlink for that row.
By default, when you use a hyperlink, the request is going to be a "GET", and use the querystring. In that case, as you build the hyperlink for each row you will want to include a whatever querystring parameters that you will need for identifying the row that was clicked.
An alternative would be to use some Javascript to submit the page, using the onclick event of the hyperlink. When you do this you would be able to use a "POST", allowing you to use form variables for processing the request.
The simplest thing is to just go ahead the the first method, and build your hyperlinks to add querystring parameters.
Make sense? There are a lot of samples of this in all the ASP books and sites.
Woody Z
http://www.learntoprogramnow.com