First, make sure you're using HTML as your mail format. Once you've done
that you should have commands available for inserting pictures into the body
of the mail item
If those groups aren't carried on the news server that's carrying this group
try using msnews.microsoft.com (MS's public news server that's the source
for all the microsoft.public newsgroups). The links under the newsgroup
references are for use with MS's web newsreader (not exactly the best way to
post but it works for some people)