I personally never had that experience but I would say as long as the tatooes are covered than it shouldn't be a problem, but you should be honest and let them know that you have one. A tatoo shouldn't be a determining factor on whether you are qualified to do your job. :)
I absolutely agree because women are naturally competitive people especially at the job. Take it from a woman who knows, other women (not all of them) are always looking for a way to make themselves look better then you even if it means putting your job on the line. Women can really act like backstabbing b****es sometimes.
A good actor that I took notice to was the actress who played Abby on ER before she became a doctor. She always had things under control and worked well under pressure.