Looking for a Find used in a datagrid

[PJ]

Gang,

I need some help. I need to implement a find function on a aspx page.
I'm displaying the data in a 3 column DataGrid with a large number of
rows, I am looking for a way to search a specific column of the
DataGrid. I cannot use the standard IE6 Find dialog box because of the
way the page is implemented (It is displayed in a ShowModalDialog
window)

Is there a free third party control that will do this for me or any
example web pages out there? Any help would be appreciated.

Thanks in advance,
PJ