Hi Pavana,
As you said you've already developed reports in DEV- assuming you already have the client tools. The server software package is separate and the client software package is separate - so you can go ahead and install the server software package and it will do the work.
Whats is essential will be notified to you when you attempt to install it- you can though still have a look at the Product-Availability-Matrix in case you've missed anything.
Thank you, Rahul