ASP.NET C# Design Issue

I have a web page that has a gridview on the page.  I know I can edit the data in the gridview directly but because of the amount of data and the validation that I need to do I want to open a popup window with the data formatted in a friendlier way than in the gridview.  My plan was to use the Select link on the gridview to trigger the popup.  

What is the call that I need to make so the popup occurs (i.e. I don't want another browser but another window in the current browser so it doesn't have any browser controls and it must be closed before the user can return to the browser window).  Also, how would I trigger the gridview on the main page to refresh after the user changes the data?

Any suggestions are greatly appreciated!