>>>Hi,
>>>
>>>I want to create an ASP.NETpage that would be shown as a pop-up/modal form over the existing page. This ASP.NET pop-up form will be used when user clicks on Forget Password link to recover his/her password. The ASP.NET pop up form will show text, email address textbox, and Submit button. I have seen sites where such a form is shown over the existing page and I would like to duplicate this look.
>>>
>>>So, say I create such a small (relatively) ASP.NET page; how do I show it over the existing page?
>>>
>>>TIA
>>
>>I'd use something like http://www.ericmmartin.com/projects/simplemodal/
>
>Thank you for the link. I will review it. But I abandoned my idea of using a Bootstrap/jQuery modal pop up form and decided in favor of a simple ASP.NET form. The purpose of the pop-up form was for a user to recover his password. That is, he/she would enter their email address and the program would email them their User ID and Password (calling SQL Server database first). Putting such functionality (calling SQL Server and sending email) into a pop-up/modal form turned out to be too complicated. ASP.NET form is much simpler.

I wasn't suggesting you put all this logic in your pop-up. You could build a normal ASP.NET page w/code behind with the logic and base it on a template that doesn't have much on it (that is, remove menus, headers, footers, etc) so all you see is the reset page. Then call this page from the SimpleModal code.