Using Outlook 2003, Windows XP (all current updates installed)

At times I receive multiple images from a trusted source that I need to
review (mostly jpg's). The jpg's show as file names in the header under
attachments. I then double click on them and view them in my default images
program (Irfanview). I have to exit the images program then double click on
the next image file name etc., etc., etc.

I'm told it is unsafe to view the images all at once in the body of the text
message in HTML formats so my question is: How can I view these images
without having to exit my image program then clicking on the next file again
and again?

Should I be using another image program that could extract all of the images
from an Outlook email and if so, what image program can accomplish this?
Any other solution would appreciated because I'm probably missing a solution
that is a click away. I've already "Googled" and went through the helps
files and can't find the answer.
Thanks.