Hi Joe; You need to use the declaration <b>extern "C"</b> to prevent C++ name decorations.
For example: extern "C" { _declspec(dllexport) long Function_1(int var1); } // Then, do whatever in your function... _declspec(dllexport) long Function_1(int var1) { // Whatever... } etc. The manual <a href="http://digital.ni.com/manuals.nsf/websearch/4f1447f7cd83d6d88625690d00637ced">Using External Code in LabVIEW</a> also refers to this. Best regards; Enrique Vargas www.visecurity.com