Jimbo,
Jeppesen have a very wide range of products that you may want to look at. All you really need is a PC, imternet and the software. I use JetPlanner and JetPlan.com - well worth the money and I personaly find the back up support second to none.
It will do most things for you, check routes, file and store them etc etc. The only real down side to JetPlanner, is that it is only really a transmit facility, so receiving Acks, CTOTs (and hopefully not Rej's!) will be a problem for you.
There are other products out there, but you get what you pay for at the end of the day.
Jeppesen