I guess the reason your trying to download MBAM is because you believe your computer is infected with Malware or worse?
If so, you may want to ask a site Moderator to move your post into our Security Forum. Once there our Security Team can assist you in cleaning up your system.
However, if you want to try to download MBAM, here's how to do it.
Boot up in Safemode and try installing it, then run malwarebytes while in safe mode.
If the scan results are numerous, right click on the MBAM screen and select all threats for removal.
Turn on the computer, at the BIOS screen start tapping the (F8)key slowly. Advanced Options Menu will appear. Select Safemode with networking. This will allows you to use the internet.
Go here to download MBAM: http://www.malwarebytes.org/
Hope this helps,
Edited by Nephilim1955, 30 October 2013 - 12:55 PM.