Colonizing the Moons

Logistics aside, would it really be possible to colonize the moons of the gas giants?

It's my understanding that planets tend to have radiation belts around them.  Would the massive radiation from a planet like Jupiter make it impossible to live on its moons or are some of them outside this belt?  Or could people just live in protected domes of some sort?

>>14
My point was it gets increasingly difficult to extract uranium as you capitalise on the rich deposits. The easier you can get uranium the more money you get and if you consider the expense needed to collect 1 mg of uranium dispersed into millions of molecules throughout 1 ton of rock and to enrich the uranium that is not uranium 238 it is obvious to see rich deposits = $$$. IF we expend all the rich deposits on earth and are stuck extracting uranium from sea water, it might then be cheaper to go to the moon to extract the rich deposits there.