WHAT TO DO AFTER INSTALLING OPENSTA?

Hi,
I have been given a task to monitor the performance of GeoServer.
I have to use openSTA for the purpose.

I have downloaded openSTA v1.4.4 and installed it on my system.
The OS is windows 7.
I have no clue how to move further.

Can someone please guide me - how to configure openSTA for testing purposes.
I need the following information:
1. How is openSTA related to IIS and IE?
2. How is openSTA used once u complete installing the .msi file?
3. What are the configurations in Web Relay and what is the significance of web relay?
4. How do i use openSTA to run tests on a site - say www.google.com?

If u can provide me with the demo site and data then it will be very useful.
The demosite link given on the openSTA portal does not work anymore.

Please help!!

--
Bharat Singhvi
RA @GISE Lab
IIT Bombay