I agree with the others...promote your qualifications and experience. I opened up my hdc 2.5 years ago and do not have children. I didn't specifically state this but when asked, answered honestly. I had lots of parents comment that they liked that I didn't have my own children and took that as a sign that this is what I want to do because I enjoy it and not because I could just stay home with my own children. I had 5.5 years experience with childcare at the time and just over 2 years with nursing though so I wasn't a complete newbie which probably helped.

Good luck!