Customized menu on right clicking any cell of the gridview

[prdnitjsr]

Hi,

Am new to Asp.net. The task: A gridview is present and when I right click any cell I get a context menu. On choosing any option given in the context menu, it redirects me to some new page with some info.

How to get a customized menu on right clicking any of the cell of the gridview?
Please direct me as to how to begin!!!