Thanks again, folks, for all the helpful suggestions. I'm a bit
calmer now.

The "problem" of not being able to get to standard ib_udf functions is
a non-issue. I had mucked with the "UDFAccess" setting so many times
I left it at the wrong value. (Thx, Sean.)

My silly fix of putting GDS32.DLL in Windoze/System32 actually seems
to be working with my custom Delphi7 .DLL. As Ivan points out, I need
to do some digging to find out what's really going on there.

Further investigation will have to wait until the end users are
sleeping -- I'll report back if I learn anything else that might be
useful to others.

Best-
-David

> Why do you ask ? If they are *your* custom functions, then you must know
> what dependencies you created :)