hi all friends
  I want your help. I am working with HTML help Workshop ,In run time
it show first page Blank(Default page) .How i can  Set First Page of
Help file .

Your question is not VB .NET related but here it is:
1. Open your help project in HTML help Workshop.
2. Select "Project" tab on the left.
3. Click the first button on the left, "Change project options".
4. Select "Default file".
This should open specified page in the help.

If what you want is to dynamically open specified help page from your
application when pressing F1 on the form (or control), set the following
properties of your form:
1. HelpKeyword property to HTML file name of the topic in your compiled
CHM file, e.g. myTopic.htm
2. HelpNavigator property to "Topic".

If you want to open specified topic from menu or button, just call:
System.Windows.Forms.Help.ShowHelp(Me, "myHelp.chm", "myTopic.htm")

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