Create new web application button disabled in sharepoint 2010

Today i was able to migrate sharepoint 2007 site to 2010. But there was a problem .. create new web application button was disabled.

But was able to fix this problem in this way (I have sharepoint setup on windows 7):

1) go to control panel

2) Here click on "System and security"

3) Now here under Action center click " Change user account control settings"

4) Get the scroll bar to never notify.

5) Click on OK.

6) Restart your system.

Now open the browser in "run as administrator" mode. Browse to the create web application page and the button will be enabled.

So happy ending :).. Now you can create your webapplication.