Hi Jayaram9,

 1. If you are using an ultrawebgrid hyperlink then this is what you need to do in order to assign a new page to the hyperlink:

a. In the ultrawebgrid (Design HTML) you set the OnInitializeRow="ultrawebgrid1_InitializeRow"

In your code behind(mine is C#), you need to call:

protected void ultrawebgrid1_InitializeRow (object sender, RowEventArgs e){

//if you want to pass any data to the newpage.aspx, then you need to collect the data from that row

string col2Data = e.Row.Cells.FromKey("col2Data").Value.ToString();

 e.Row.Cells.FromKey("YOURHYPERLINKColumnName").TargetURL="newpage.aspx?col2Data="+col2Data

}

2. If you need to open up a modal then I would suggest you use this way

http://forums.infragistics.com/forums/p/842/11844.aspx#11844

with javascript http://www.eggheadcafe.com/articles/20050319.asp

 If you need more info, let me know!

Good luck! 

HS2