Hi Michelle~
Welcome to the world of Virtual Assistance!
I am a real estate virtual assistant, and have been for about 5 years. I'm not sure what your background is in real estate, but one thing I might suggest is pick the "niche within the niche" that you absolutely love and become the best you can at that..rather than try to to absolutely everything.
For example, I specialize in Listing/Marketing Coordination, Internet Marketing, a Social Media Marketing, but I usually will subcontract with an Associate VA for Leads/Database Management, or Transaction Coordination, unless it is simply per project work. Build a very detailed website of your services..and perhaps even create "pages" that highlight the services you really love do. Of course a blog helps too
Join online networking forums like this wonderful site to get your name out there, as well as other Real estate forums, to talk about what you do, and to be able to respond to RFP's of those looking for a VA.
Best of luck to you and a prosperous business in 2009!
Laura Monroe, PREVA
www.CreativeAgentSolutions.com