try this link it might work for what your looking for. it is pricey.
http://marketplace.intuit.com or
www.bmobiletech.com/products/qb/
Im thinking of getting this for personal and biz. you could use it the way you want i guess. So far they say it works with wireless sync. one of the developers is using it on XV6700, WM5, Verizon. Im still researching. It is part of Quick Book if your in too it, hey i just made a funny!