I've found that I get business through a mixture of ways. First, yes, the website is mandatory, as clients always go to the website to not only see your stuff, but you who are.. Even when I didn't have a client come through the search engine, I always send them to the website, just so they can see it all spelled out..
But I also get word of mouth, through advertising, search engines, Networking, etc.. I find the more avenues I open my business too, the better the chances are for building clientelle. The big thing is getting your business out there.. You friends, family, anyone for that matter who will spread the word about your business--this is great free publicity.. I've gotten a client or two becasue of this..
One thing to remember is don't give up.. We all have to start somewhere, and its where we start, that we will remember the most.. Research all the other VA's in your area. Where are they marketing their business. Try to get in all the free ones.. I've gotten clients from doing this as well.
Hope you build that business, and clients come in.. If you haven't already added your business here, make sure you do. You never know when someone here has to outsource e work or jobs become available!!! Good Luck to you