using ajax on godaddy.com shared hosting account

Hello,
 
I have a shared hosting account at godaddy.com.I am trying to use ajax on my account ? for the
domain oogazone.com




 GODADDY
online help and support section says not to include System.Web.Extensions.dll
file inside the bin folder.


http://help.godaddy.com/article/2468


 


But
if I do so - the whole site crashes. If I delete from the bin folder the file
System.Web.Extensions.dll and the site will crash and I get the following error ...