>Thks a lot, I worked, however didn't work as I wanted, when I set the HelpContextId and click in the what this button the help file shows all of a sudden, and this way is ok because it works just as if you press F1 to get help on an specific control, but, here is the issue I'm wondering if this help can work just as the What This help in Windows, you know, when you click the What tis button and click in the control you want help of , it shows a pretty fancy box just like the tool tip text but multiline, and doesn't open all the help file, how do I do this?
>
>does this make any sense for you?

Yep. As long as the HelpContextID property for the form or object has a matching ID in the CHM file, it should work by default. I have not been able to get this to work either. I use this same tool as well. Here is a link to the documentation. Make sure you also look at the links in the SEE ALSO sction at the bottom of that page.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fox7help/html/dgtskprogramminghelpfeatures.asp