windows server 2008 and session problem

[eluser]Unknown[/eluser]
I'm using codeignitor 2.0.2 and sql server 2005 and IIS 7, my site is running fine in my local machine and i installed windows 2008 server and there also it is running fine.

when i installed it in to the production server [windows 2008 server and sql server 2008]. It is not even load the session, when i check whether the session is loading the session is destroyed.When printing session there is no data.

I'm not using database for saving session.

I'm in hell, Please help me.