Create a datagrid with checkbox column that can be manipulated by client-side script

[dotnet dude]

I am creating a DataGrid control (ASP.NET 1.) with few bound columns
and one template column in which i want to display CheckBox. So for
each row in datagrid some databound fields and a checkbox column.
When a checkbox is selected, it indicates that particular row is
selected. The checkbox selection I want to do is through javascript to
improve the performance of the application.
How do I design such datagrid which allows me to do selections using
client-side scripts and also maintain these changes on postback.

The issues that I am facing are
- I am not able to create a template column which generate checkboxes
with ids/names that I can use in javascript.
- The javascript changes are not persistant and are lost on postbacks

Any ideas??