Communication Link Failure Error

Hi,
I have next situation:

I have an application for win32 developed on Delphi 7.0 and accessing SQL Server 2005
Express database connecting to it using an DBC Connection.

My application works fine except by a little and important detail

If we are using the application and a problem of communication with the server occurs
(network disconnection, Band width saturation, etc.), after communication problem is fixed
our application didn't respond and show us a message like "Communication Link Failure
Error". For continuing working we need to close the application and start again.

Do you know if exist a way to continue working after a communication problem occurs ?
What do i need to do to fix this situation ?

Any other idea.

I'll appreciate your help

Thank you !