Subj : DLL To : borland.public.cpp.borlandcpp From : Alex Simic Date : Thu Oct 06 2005 01:45 pm Dear all, I need urgently help, since I am in trouble with my exam: I am programing a velledom card which is connected by UBS to my computer. I am using Borland C++ version 5.0. Basically in the User Guide everything is described fine. Here is the user guide: http://www.produktinfo.conrad.com/datenblaetter/175000-199999/191003-an-01-de-Programmieranleitung_K8055_DLL.pdf I am using the code on the last page of this guide. I did it exactly how it's described but by compiling the code I always get the following error: [Linker Fehler] Unresolver external "OpenDevice" referenced from C.\programme\borland\cbuilder5\projects\vellemann.obj. I have the K8055D.dll in the same folder as the project. Do I need to include something to the project? Please help me I need some hint. Thanks .