[AIA]

Do you have a budget? If you're looking for immediate traffic you'll probably have to purchase it, and depending on your market, price can vary wildly. Oregon Coast had some great suggestions and it shouldn't deter you from using the majority of them even if they don't provide instant traffic.

As for just a ton of traffic instantly you often get what you pay for. There are companies like Zango that will target your ad (popunder) and serve it very cheaply to hundreds of thousands of people. It's not everyone's idea of great marketing (including mine) but it does achieve what you want, however, you'll also have to contend with the fact that you're promoting a business via an Adware company...but like I said, you often get what you pay for.

My recommendation would be to work on establishing content and the traffic will eventually come. If you start a blog and submit it to Technorati then submit the RSS to Yahoo - AND write well, you'll find a target audience quickly.

I also know there's an ad co-op out there somewhere (digital point I think?) that gives you credits for exchanging links and you share traffic with other webmasters, but I've never used it, nor do I know if it's still active...maybe you'll want to look into that as well.