Hi Karla
Do you have a good relationship with your boss? If so, I would simply talk to him/her and explain that you are starting a VA biz at home as a side job and was hoping it was okay to let others know what you are doing that you work with. I wouldn't get into too much detail or give too many specific. I mean, will your services be of benefits to others or would you be taking business away from someone else?
I mean, if you were working as a car salesman and you opened up your own car lot and went into work and plastered a sign about your car lot then no I don't think that would work but doing VA work could help many different types of businesses. I would open it up for discussion with your boss and take it from there.
Hope this helped!!
Robin
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Virtually Robin