>how to call the html files from vfp menu

You want to just bring up regular HTML files in the Browser window from VFP? Two easy methods, using Windows' default browser through ShellExecute:

DECLARE INTEGER ShellExecute ;
	    IN SHELL32.DLL ;
	    INTEGER nWinHandle,;
	    STRING cOperation,;   
	    STRING cFileName,;
	    STRING cParameters,;
	    STRING cDirectory,;
	    INTEGER nShowWindow
=ShellExecute(0,"Open", "http://www.microsoft.com","","",1)

or IE Automation:

oIE = createobject('internetexplorer.application')
oIE.Navigate('www.microsoft.com')
oIE.Visible = .T.

Instead of a web addres, you can use a local disk file too.