Rick,

You assistance is much appreciated.

>You can just add a version resource to the project and that will take care of that.<

I found a copy of version.rc somewhere and did as you suggested. I eventually got the dll to build.

I replaced our working version of the foxisapi.dll with the new build and gave it a trial run. However, it does not work!! The following error message is returned by IE 6:
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Page cannot be displayed
.
.
.
HTTP 500 - Internal server error
Internet Explorer
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I also note that the newly built dll (64K) is somewhat smaller than the version supplied by MS (76K).

Do you have any other ideas on how to proceed from here?

Martyn