NetBiz.Com is only selling you a service that you can do yourself. They are charging you to set up and maintain a Google Ad Words account (
https://adwords.google.com/select/Login) or the same with Yahoo! Search Marketing
http://searchmarketing.yahoo.com/ (which are both pay-per-click advertising). Besides paying NetBiz.com for this service, you still have to pay Google and Yahoo! for each click.
I'm the Manager of a Limousine Company in Houston with a large web presence, and we get companies like this, that call us on a regular bases. I personally set up our company's account with Google Ad Words and Yahoo! Search Marketing more than five years ago (and at the time I had basic computer experience). It is very easy to set up the account yourself - Please do not pay an outside company to do this for you.
The best thing for you to do is get you website optimized regularly. Our company uses a program called Dynamic Submission to submit our website to many search engines on a regular bases. We do all of this in-house - doesn't take more than a couple of hours.