Don't use an EXE. Use COM+ components that talk through Microsoft Message Queue (MSMQ). Don't reinvent the wheel. Much of the work is done for you with these technologies. Here are some articles

http://www.craigberntson.com/articles/complus.pdf
http://msdn.microsoft.com/en-us/library/ms917361.aspx

>Hi All --
>
>My client has a need. There are multiple sites spread over half the country. Each site has its own DBC. The name and structure of each DBC with its DBF's is identical and only the data content changes from site to site.
>
>I want to build an EXE to live at each site that will serve data from the site to each of the others.
>
>Suggestions?
>
>Thanks in advance for your thoughtful insights.
>
>Larry