yii demo can not work


I got very strange problem,i download newest yii version,and just unzip to webroot,and visit http://localhost/yii/requirements/,is working. then i use yiic to create a new project,all done,but i visit http://localhost/yii/testdrive/,it’s can not work,and browser says “this page can not access”,error code is 101 (net::ERR_CONNECTION_RESET),I don’t know why?

My OS is windows 7 and apache version is 2.2,php is 5.2.10,i reinstall apache,but still have this problem.all demo have same prolem.

i feel there not my apache and php problem. I try to test on other machine,still have this problem.

please help me!

Thank you very much!