Some are having issues opening my attachments. Not sure what the software glitch is. It works for me when I use the Mozilla Firefox browser. A free download at http://www.mozilla.org/en-US/firefox/new/. I use this as my default browser all the time. Internet Explorer seems to be the issue.
Alternatively, you can right click on an attachment and "save target as" to your desktop and open from there.
Textbook login:
http://my.hrw.com
username: mccleskey2
password: dragons7