Because the import library that Link32 emited for building DLLs was incorrect,
Vortex sent me some suggestions and to use the TimoVJL's Tool to examine the library,
I managed to correct the Link32.
Now Link32 works fine for Windows DLLs.
You can download the new version of Link32 from my site:
http://www.manoscoder.gr/mysite/coderstudio.htmMany thanks to both, Vortex and TimoVJL.Manos.