Hi Diane -
This subject comes at an opportune time for me to be able to try to respond. I've been working on mine, and I just sat through a LONG meeting today on a project where I am helping a Board of Directors get a childcare center up and operating! So...with all the experts surrounding me - including a banker who's responsibility it is at her bank to award money - and advising me personally over the last couple of weeks...I may have a little light to share! Finally I can contribute something.

lol!!
Ok...there are different purposes for business plans. Typical 3 are 1) to get loans 2) to get investors and 3) for internal use only for you to just have your roadmap.
#3 for a VA should be the least you have and it will be fluid to some degree. There is an incredibly awesome template (and I looked at about 20 resources before I took the plunge) that Danielle Keister who runs the VA Chamber of Commerce. When I finally broke down and paid the $27.00 to download her business plan form it helped me tremendously. Not only did it help me formulate my ideas - it helped get my creative juices going for some other things I hadn't thought of. Not that I ran with the ideas in the business plan, but it was just inspiration!
If you decide you need a business plan to get money, then that will take some more in-depth research and work. The banker who's been mentoring us said that one should expect a business plan that has everything needed to get a banker or investor to want to work with you usually takes up to 50 - 60 hours to prepare - at a minimum. She also highly recommends a book that she says is the ultimate book for writing business plans. It is called "The Anatomy of a Business Plan" by Linda Pinson.
Our banker has written many successful business plans for others, as well as grants that have won money, over her career - so I'm buying her the best lunch I can next week to get into her head even more!
I hope passing on what I'm learning will also be of benefit to you.