Thanks Simon for your inputs. I think I got the way from where I should start.

Can anyone suggest me how can I start learning objective-C? I am completely new to this programming language. Are there any books available for same? What are the prerequisites to learn this language? I mean any programming languages, IDE for development. I know C,C++,Java and C#. Thanks, Tapan

Suppose in my application if user is to enter IP/Port information to connect to proper server and it is the address/place where my web service runs. How can I achieve that?