M.S.
I looked high and low for a diaper service in Pittsburgh and found none - but that was 2yrs ago and things may have changed. I recommend two sites:
http://diaperware.com/
http://www.greenearthbaby.com
I was all set to go CD, but my son was over 2mos early with tons of health issues - we were bombarded for his first 5mos and CD wasn't something we could fit in. We stuck with Nature Babycare diapers and Earth's Best diapers. Once those were no longer cost effective, we moved on to Huggies because they don't contain petrolatum. I hope to try CD with our next!