Mate, reading the above what more encouragement do you need!
As someone who is in the training pipeline at the moment and has had a limited experience to both civil and military flying all the above posts are spot on. I'm chomping at the bit to start (only 130 odd days till grad!)
Get your but into gear and research ADFA as well as DEO options if you have missed the ship for ADFA 09.
PS. The ADFA guys im working with atm loved the place, it's really cruisy* with a great lifestyle and drinking habbits.
*unless you do an eng degree, then it's hard working and even harder drinking.