thanks Mr Mike, i was using // instead of \\ and that was creating the problem.

I have another problem. While the HTML files in my PC are perfect, some of the files are not received properly when sent by this CDO.Message. When the receipient receives, some portion of the file are overlapping on other part of the file. But if I send the same file thru outlook express, there is no problem.

I guess something happens with this CreateMHTMLBody or HTMLBody. Do you have any idea
about this problem and solution for the same. thanks in advance.