, schematics are all in my mind but i will gladley give you guidance and a helping hand.
First you need to learn how to control a graphical KS0108 LCD, MEM from the forum has created a great library. In the playground you can find details about how to connect and get started on the KS0108. Read and learn how to use it.
I recommend that you buy a KS0108 LCD that is proven to work already according to the playground.
To get a KS0108 to run you will need to connect several pins to the arduino board, therefore i suggest to get the Arduino Mega. It has a slim design and even more ports and memory then my set up based on a ATMega 644.
Check out the link previously about the touch screen and order one from deal extreme or maybe you can extract one from a old phone or other device that is scrapped. Create a on/off menu with icons to prepare for next steps.
Next step is to get your communication working, seeedstudio has a great price on RF 433Mhz : http://www.seeedstudio.com/depot/433mhz-rf-link-kit-p-127.html?cPath=2&zenid=5af1418f8ac6f7567d9ac4232984fc83
This is the part that may get tricky but if you look at the Virtuaed Wire library documentation you will find that all there is also presented in a user friendly way : http://www.open.com.au/mikem/arduino/VirtualWire.pdf
Set up a slave arduino with a tx/rx RF and use your touch and KS0108 to switch on/off a led.
Then the rest should be a matter of time and patience or ask for help and i will support.
Did this get you started?