We have a great deal of experience Modern Bill software but this bid is a generic placeholder until I find out more details about your server and the setup of your software. After reviewing the project posted, we don't see any problems developing your solution. Unlike most designers, we are an US company based in Atlanta Ga, and all designers are US based, our work is not contracted out but completed in-house. Our work is not only guaranteed to meet your every need, but as an design and hosting company in business from 2000 we can assure the highest confidentiality in all our contracts. We have extensive experience in designing, developing and deploying complex online systems and a design staff to meet most every need in online graphic design.