Mr. Stephan Meyn Thanks for response... I want to test the stress...Request/Sec. but Im not sure that ACT will work at the application that has encryted passwords and connectionStrings. We create Test while navigation through the pages (Application). The thing I want to know, would ACT save the session and Encryted data, when we create test. To use it when we will run the test.???? U asked, what i wnat to test???? its a Secure Website that use Encryption heavily. First i been using ACT in simple application, not such complex one. if u know how to create complex Tests and either ACT will Work well...then let me know....I need...........