Being a virtual assistant is kind of like being an administrative assistant but from home. This is usually more like a business rather than a job only because you have to promote yourself and register with different services in order to get enough work but if you have experience in this type of thing you probably won’t have any trouble keeping busy. There are a couple of virtual assistant companies that actually hire you but most others are more like a staffing agency and assign you to different projects. Many Virtual Assistants register with several companies and some even set up their own website to advertise their services. Here are a couple of companies that handle this type of thing. This is a work from home jobs that I am not as familiar with as some of the others so make sure you do your own research as well and read my post on work from home scams. I know the two that I hear of the most are the first two listed so I know they must be good companies to work with for VA's.
Team Double Click
Keene Team
Executive Assitance
Frontline4Hire
Office Details
Assistant Match
The Virtual Professionals
VSS Cyber Office
Davis Virtual Assistant
Virtual Office Temps
Millionaire Virtual Staffing
Virtual Staffing Team
Virtual Assisting USA

Good luck!