Just go to one of the following links enter the facebook url example : http://www.facebook.com or www.facebook.com and you are done.
If you want to use other proxy softwares to login to your facebook account you may use the following softwares to login :
If you are mozilla firefox browser user and fan you can add a simple add-on to change your proxy and login to your Facebook account - Add this addon to mozilla
Or you can use UltraSurf proxy software to login to your facebook account - click here
You can also use Hide My IP to access to your Facebook account using proxy - Click here