If your friend installed Sp1 and has windows XP, he might need to try this:
taken from call for help, TECHTV.com
SERVICE PACK ISSUES
Once you install IE6 SP1 (which is inside Windows XP SP1), Outlook
Express
will automatically block certain types of attachments. It's about time!
If you're feeling lucky, you can turn this off by clicking Tools,
Options,
Security, and then the entry labeled "Do not allow attachments to be
saved
or opened that could potentially be a virus." Again, I recommend that
people
keep the check mark in this option.


That might do it.
BB