'Opens the request.
method:
the request VERB \'GET\', \'POST\', etc.
url:
the url to connect'

def open(self, method, url):

    flag = VARIANT.create_bool_false()
    _method = BSTR(method)
    _url = BSTR(url)
    _WinHttpRequest._Open(self, _method, _url, flag)
