<t>Hi Elektor,I have several quastions to your post, if you do not mind:1. I suppose you have to use DLL WIZARD in bcb to write "Code(sumtwoints.cpp)", right?2. Shouldn't there be any dllimport in the subsequenst statement?3. Could you explain what this "-O2" in "BCC32 -tWD -O2 sumtwoints.cpp" means...