Trying to open a website using Workbooks.Open Filename:= fails- gives back page source

Hi,

This is my first post and hopefully a quite easy problem to answer
I am trying to get excel to open a certain webpage using:

Workbooks.Open Filename:= _

        "http://www.gpw.pl/indeksy_gieldowe"

    Cells.Select

    Selection.UnMerge

What i get in return can be seen on a screenshot below. Is there a way around this to be able to import this certain website using VBA?

Thank you in advance

image001.jpg