Check http://support.microsoft.com/kb/902225

>In my main program I use the commad: SET HELP TO HELP.CHM
>
>Then, the help.chm works fine in the server
>
>In a network, if I press F1 the CHM file opens OK, and contents are shown on the left side
>However the help pages do not appear.
>I can see something as below in each page.
>
>Any help or suggestion will be welcome
>
>Moises
>
>
>=================================================================
>
> This program cannot display the webpage
>
> Most likely causes:
>You are not connected to the Internet.
>The website is encountering problems.
>There might be a typing error in the address.
>
> What you can try:
> Check your Internet connection. Try visiting another website to make sure you are connected.
>
> Retype the address.
>
> Go back to the previous page.
>
> More information
>================================================================================