In Outlook Express, create a new folder at
the top level called Spam. This is where the
email marked as spam will be stored.
Then create a new rule by clicking Tools in
the main menu, then Message Rules, then Mail...
Now 1. Select the Conditions for you rule and
check the box next to Where the Subject line contains
specific words, then 2. Select the Actions for
your rule and check the box next to Move it to
the specified folder, then 3. Rule Description
and click the contains specific words link.
Add two options, one for {Spam?} and one for {Definitely
Spam?}
In 3. Rule Description click on the specified
folder link and select the Spam folder that you
created.
In 4. Name of the rule enter an appropriate
name, such as Spam Filter, then click OK.