What do you guys use process visa/mastercard for mainstream biz?
 

I am not talking online but tangible goods and services for a regular biz?
to run cc orders over the phone?
Is there a company that anybody can recommend?

If you are a real life business, then you should have a merchant account and rent/buy a credit card machine.

:2 cents:

I setup an account with Verisign for a client once, and he was very happy with it.