Marc,
When you build the exe foxpro also registers the COM for you, in the other machines you need to do this, try in the cmd window
regsvr32 [your path]\SendEmailFax.dll
(Or whatever the name of the dll)
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges