First and formostly have a good easy to use and fast loading website, get your website high on the search engine’s in your particular area of expertise.
Outiline who are your potencial customers, people with something to sell if your good at e-commerce site’s targeting something like small childrens toys which can be inexpensive and easily posted with out damage might be a good target area.
The website you have may be all singing and dancing but if it does not say in every possible way contact me, I mean not in a blatant way but having call back boxes and free phone numbers as well as email and maybe instant messager may make it easy for your potencial customers to contact you (be vary with free phone as if your attracting customers that do not want to pay you for your services, such as students looking for freebies)
General good businees practice work’s well both online and offline, let all your friends and relatives know what you do, put your email/web address anywhere it will get noticed, reply to emails with thing like
My Name
Info@myCompany
http://www.MyCompany.com
tel 01234567890
Fax 012345467890

Contact your local trade and industry groups, they may have list for you to target your business at…

exchange links on different websites
post your special offers in forums
offers affiliates or reseller programs.

btw, if you had posted your website here many peoples would be visiting your website aswell and if your offer attracts them than may be they sign up for that.