Accounting SW for MS SQL SERVER

Hello

I have just developed a warehouse and inventory control system
for a manufacturing company with custom hooks satisfying the
company culture. I used VB6 as the front-end and MS SQL Server
as the backend.

They would like to hook it up to an accounting software for
billing and other purposes. Could you suggest me a couple
of accounting software packages that I can evaluate for
recommendation to my customer.

The Accounting software must use MS SQL Server as the backend.

Thanks so much for your help.

Satya-narayana