Please use the code BB tags as that's unreadable...
Edit: like this:
Edit again your list like makes no sense whatsoever. You have allocated an instance of NSURLConnection but not initalised it. This will cause massive failures. You then send a class method to this instance. This will not work (which is why you get the unrecognized selector error). I think you need to look at the basic Cocoa documentation and understand the difference between a class and an instance method.
Your last like should read
Code:
m_pRecData = [NSURLConnection sendSynchronousRequest:pRequest returningResponse:&pResponse error:pError];