You would probably need a license for it . One thing that I have extensively read from fellow traders in the US, is that its hard to sell bitcoins without the license.I also don't expect you would get a serious and completely accurate reply on btctalk, so would suggest asking a lawyer rregarding this.
Right, do you have any idea where I could find lawyers knowledgable on bitcoin laws?
Perhaps it's best to inquire with the lawyers around your area, because it would depend on the legality of bitcoin there. It may be hard to find a lawyer who's knowledgeable on bitcoin, especially since I think there's not much law or jurisprudence relating to bitcoin since it's quite new in the international scene.
Regarding your business, I think that there will be a need for license or papers for that even it is concerning to bitcoin. Any kind of business that you would want to put up would require some paperwork and registration, otherwise you might be operating illegally. Every business should be recognized by the state.