How handle pop up window

Hi,
I am working on one healthcare product. In this product on home page "Patient" button is there. When any user clicks on Patient button application opens pop up window/screen having list of some more patients.we can search patient by lastname in same pop up screen also.

I don't know how to handle this pop up screen in selenium RC. Please guide me how to write code.

try with:

selenium.waitForPopup("windowTitle","timeout");
selenium.selectWindow("name=windowTitle");

don't you use the Selenium IDE to help you have the scripts?

check out the following blogspot it might help you.

http://qtp-help.blogspot.com/2009/07/selenium-handling-windows.html

Record the steps with Selenium IDE and the export the test into your favourite language (Java / C# / Python, etc). Check the code and see what is the API used to handle the popup.