How do I exchange foreign currency to US dollars?

I live in the USA and I do art commissions and I post my art on DeviantArt, I wish to be able to take commissions from people over seas but I don't know how the whole currency difference can be resolved. I'd prefer to do it through snail mail of some...

Have currency from many places. I'm in TX.

I am departing tomorrow. My bank (Wells Fargo) told me I could do it through them and they could mail me the foreign currency. I procrastinated, so where can I do the currency exchange? Also, is there a fee to do it?

I have found 500 rubles. Would like to exchange for American dollars. Any idea where I can do.this?

I don't live near any airports. I have 1068 pence, 6.36 Euro, 4 pounds, 225 Kroner, 2.11 Canadian dollars, 51200 Lire and 500 pesetas. Thank you.

Will my debit card automatically exchange with current rates?

Hi, I will be going to Montreal this winter- I have travelers cheques in US dollars- where would I be able to exchange these (to Canadian currency) for a good rate? Which banks or currency exchange places offer good exchange rates? And if I were to exchange...