Don't worry overly about your RT, it's often a lot better than you think. Listen to the radio in your flying club when you're grounded, and if there's anything specific worrying you go through a mock flight in the briefing room with your instructor. Most of it is common sense, and ATC should "happily" respond to non-standard calls such as "Help, I'm lost"!
You'll find the RT practical a lot easier than you expect! The examiner will give you a sheet with a route marked, and will explain what calls he wants you to make. You might get a MATZ penetration to deal with, and a few changes in frequency. On route you will may also have to ask for up to date met info, make a pan call, and relay a mayday. So nothing too outrageous! You get plenty of time before the test to work out each call, and the test itself is in real time. You can make your next call as soon as you're ready, but you can't leave it longer than the expected 'flight time'.
Good luck, and don't worry !!!
Last edited by AerBabe; 1st Apr 2002 at 13:00.