If you have IE installed:

obj = CREATEOBJECT("InternetExplorer.Application")
obj.Navigate("google.com")
obj.Visible=.T.

If you want to use already running IE instance, first available window:

oShell = CREATEOBJECT("Shell.Application")
oWindows = oShell.Windows

FOR EACH oWindow IN oWindows
	IF "iexplore.exe" $ oWindow.FullName
		oWindow.Navigate("google.com")
		RETURN
	ENDIF
NEXT