Thank you both of you for the help! I will post details and question updating this thread as I go. Jantje with the crystal information you provide it makes sense to me....... I am going to give rc lawn mower a try or perhaps an rc plane....whichever is easier for a first rc project.
You don't mention in your profile where you live (hint, hint - it will help us help you better in the future), but something you should check out are the various laws/rules for your country and/or locality in regards to R/C transmitters and receivers.
For instance, from what I understand - in the United States you can't use an R/C aircraft transmitter/receiver combo for anything but an R/C aircraft; such transmitters and receivers have specific frequencies they operate on. Furthermore, for aircraft transmitters and receivers, an individual can't legally change out the crystals of the transmitter and receiver (they must send it back to the manufacturer for that). It has something to do with proper tuning after they are switched out, to decrease issues with cross-frequency interference and such (I think). You also can't remove or change the antenna flag, either (it must match the crystal in the kit).
That said - I don't know how much or well such laws/rules are enforced, nor what the fines are. Again, this is just based on what I read up on regarding FM transmitters and receivers (because I was researching such after finding a nice 4 channel Airtronics transmitter, and I needed a receiver and crystal to match). Furthermore, I don't know how this effects the newer spread-spectrum 2.4 GHz systems.
Nor do I know how any of this applies outside of the United States - just something you should keep in mind, if you plan on using any FM system (which admittedly are fairly old and "obsolete" by some standards)...