How long do I let my 5.5 gal fresh water fish tank run before putting my 3 goldfish I just won at work in it?

Help! I just saved 3 large goldfish from my work party. They're in a tiny bowl they can barely swim around in without hitting each other. I went to Petsmart and bought a 5.5 gal fish tank for them. I also bought some distilled water. How long do I need to let the tank run before I can put these poor fish into it? Any fish advise is would be very nice