It's a certainty that my real name isn't my screenie. If creationist calculations of individual molecules jumping together to make even a simple cell mean anything--and my use of them here might be the only legitimate use of them--it's that nothing is likely to make a man out of dust in one afternoon. The creationist "Were you there?" argument also reduces confidence in this one. Then there's the creationist "Why don't we see this happening now?" argument.
I'd have to say the odds must be about zero.
"It is absurd for the Evolutionist to complain that it is unthinkable for an admittedly unthinkable God to make everything out of nothing, and then pretend that it is more thinkable that nothing should turn itself into everything."-G.K. Chesterton