Actually my question is two fold.
1. We are writing some software to assist doctors with EMR functions. We want to modernize their billing system but are unsure how to do it. The program is based on C# smart-client architecture. Is/Are there any online billing services that will allow our software to consume say a web service to help with the billing aspects of our software. If not, please give some advice on where purchasable controls for the medical field can be obtained.