El Barto,
Having a company registered as a company is a good idea for business purposes. You would do that through your state's Secretatary of State Office. They should be able to direct you to information about starting a company.
HOWever, a Name is protected by Trademark. Just because you registered a company of a certain name, does not mean that you have the official right to use it. You and your band need to file a trademark in the US Office of Patents and Trademarks. The fee is $325 for each "class" of goods that you register it in. This would give you national protection to use a certain "name" on certain products.
If you can't afford the federal trademark registration, then at least get the name registered in your state trademark office. It will only cover registration in that particular state. The fee in my home state is $20.
There's plenty of other info on the USPTO's website about trademarks. Technically, you Do NOt have to register the name (as similar to copyright). However, this "common law" use of a name would only give you protection in the geographical area(s) that you actually did business (sold product), in the event of a dispute. So it's better to officially trademark a name.
USPTO Web Site:
http://www.uspto.gov/ Click on "trademarks".
Rev E
P.S. The USPTO is not as lenient about mistakes as the US Copyright office. If the application is incomplete or important info is left out, the application will be dropped and the fee will NOT be refunded. So have you "T's" crossed and "I's" dotted. It is a must that you do a trademark search first, before applying. Start by doing a search of the USPTO database, then an Internet search, then a search of yellow pages (the
www.superpages.com is a good site to do city, state and national yellow pages searches), then do a search of state databases (for this you'll have to pay to use a service like Dialog or something similar). If you don't want to do this work then hire a search firm for a few hundred dollars. You might say, "our name is soo unique that no one would ever name their product this". You'll be very surprised! The USPTO isn't only checking for exact names, they also will not grant a trademark if a name is too similar to another name (in the same product class) that the public will be confused. So choose carefully and do your homework.