Step 1:  Login to WebsitePanel

Step 2: Select Web and then Web Sites

 

 

Figure_1

 

 

 

Step 3:  Select your domain name. You will be directed to the Web Site Properties page

Step 4:  Select Extensions tab

 

 

Step 5:  Select the desired version

Figure_2

 

 

Step 6:  Click the Update button to finish the process

 

 

In addition to ASP.NET, you can also enable ASP, Perl and change the version of PHP.