Accounting software program amendments

I have an accounting software program written specifically for solicitors. It is a trust account software program that requires law society compliance before I can release it to the market. The software was written from scratch and based on my specifications. It is a web based application. I have now completed phase 1 of the testing process and have found a few minor problems that require fixing. There is 1 large error in the program. It is the Bank Reconciliation process. It does not run accurately. The programmers that designed and wrote the software did a great job but could not grasp the Bank Reconciliation process. It is only partially complete. I need someone with experience in accounting programs and in particular an understanding of bank reconciliations. The program is basic at the moment. There is a client database. Each client has one or more matters attached. Each matter requires a seperate ledger. Payments and receipts are only ever written against a client ledger and each month there are reporting of the cash book and trial balance and these must reconcile with the Bank Reconciliation. In addition some of the reporting is quite rough in appearance and I would like to have some areas of reporting more graphically pleasing. I have some very specific requirements and would appreciate only serious bids from experienced software programmers. Once this project is completed accurately I plan on having additional modules designed and attached to the program such as time costing, general ledger, office ledgers for client disbursements plus more. Therefore there is an opportunity for ongoing employment. Thank you.