OK, I found it. Pretty simple thing really, as I kind of felt it would be. While I'm sure most of you already know it, just to be prudent and fair, here's the code:
private void MenuItem_Click(object sender, EventArgs e)
{
Help.ShowHelp(this, HelpProvider.HelpNamespace);
}
Now I found this by posting a question on the Microsoft VS forum, and someone directed me to a site called http://www.helpware.net . Interesting place really.
Now, if I can just get this database thing figured out. . . .