If you are having trouble downloading the large size file there are a number of download managers available on the web, which will run for a period of time in a demo mode. The following are a few with which others have had success. This is not an endorsement by me, nor do I provide support for these utilities.

Windows:

FlashGet - http://www.amazesoft.com/

GetRight - http://getright.com/

Macintosh:

Monica - http://www.blackdiamond.co.za/

Speed Download 2 - http://www.yazsoft.com/