1.4 download link1.5 download linkAbove are the links for 1.41 and 1.5 for the patches. Just go to the site, and download them to your computer. ALWAYS save the file, never run. One of the many ways people get screwed over from using Internet Explorer is just running files instead of saving them first.
The install files are pretty hefty in size, one reason they could have failed is due to a lack of harddrive space. Make sure there is room before you download.
Alternatively, be sure you're on a good connection. The first file is 536mb, and the second is nearly 2GB. If your connection craps out at any time, you're likely to lose the entire file.