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?