If you win a satellite that you've bought in to, say for the double deuce, you can unregister and take the cash in the form of tournament dollars. This is just site currency which you can use the same as real money
for anything EXCEPT ring games. You can transfer them for cash if you pay a 5% fee, but thats a waste of time and money unless you are withdrawing.
If you enter a satellite with Full Tilt Points and win, you can unregister, but only for Full Tilt Points. If the tourney buy in is $100, you wont get it, they credit you with 40,000 points instead (roughly).