how to use select button in gridview

Question

hi,
        I want to display a picture when I click the select button which the gridview format in C# provides alongside each row.I have created two columns num and name .I have used the property select ,which displays select button like a hyperlink.

But my doubt is how can I dsplay a picuture when I click select.I have downloaded pics and kept in some folder....
Pls help me out!!..
Thanks in Advance,
Ravi