I have to use a dll from ACG: http://www.acg.de/synformation/servlet/PageServlet/corporate/RFIDProducts/Start?language=English&show=RFID_RfPcHandheldReader_Tools This dll is for Pocket PC, and I have the *.lib of ACG. Also I have build a stub dll for win32 like in http://digital.ni.com/public.nsf/websearch/517300B49212795986256DDD00623FEE?OpenDocument. And when I want to build my application for PPC, Labview saids "GetStrigVal is a missing VI or C file". Some idea???