Unrecognized configuration section 'connectionStrings'

When I try to create a virtual directory for web service in IIS and try to browse the .asmx file, igot the following error
"Unrecognized configuration section 'connectionStrings'".
This is happening because by default the ASP.Net version selected is "1.1.4322" where as the code i have written is .Net version 2.0.
So, the solution is change the Asp.net version.
Go to the virtual directory, Properties. From ASP.NET tab, select "2.0.50727" for ASP.Net Version and click ok. Now it should work properly.