liudr:
If your altimeter and accelerometer output analog signals, you can strap it on an xbee radio module and use a ground xbee radio unit to receive live data. No arduino needed.
Ideally I would like to use an XBee, but that will be in the future. Im just wanting to learn the basics at the minute using an Arduino.
I havnt played with an XBee yet and feel it might be a bit complex for me at the minute.