Are you talking about a package that some company offers, or are you looking to get a website for you business. You don’t just "sign up" for small business website development. There might be a small business web hosting package – you could sign up for it at http://smallbusiness.yahoo.com/webhosting/ – but if you don’t have a website already made, you’re just wasting $.
You need to hire a web developer to make your a website. Be prepared to spend money. A crappy website will make your business look bad. A good website can make your business look bigger than it is.