how to compile vb6 .cls file to get dll

Hi,
I am a new comer, I am doing a project and that project is written with ASP classic.
In that project there is dll file which is come from bin folder and the class file (.cls file) and that
.cls file is in the other place. That .cls file is written with vb6 and that file is existing as alone or on its own.
Not in a project and the problem is I have to fix my project which is the code come from dll file and
exactly come from .cls vb class file. So, I have to fix .cls file and I need to recompile that vb .cls file to
get new dll back.
Please, can anyone give me any idea or advice for that.
Thanks,
Kind Regards,
Kyithar.