Hi Ajit

Just go thr this link;

http://www.ajaxprojects.com/ajax/tutorialdetails.php?itemid=12

Herr they have mentioned a process of how to use ajax in 1.1

As u have already complete it in 2.0 you can do it in 1.1 by using this.

Also have a look here in this link;

http://vadivel.blogspot.com/2007/03/autocomplete-features-of-aspnet.html

Best Luck!!!!!!!!!!!!!

Sujit.