Mr. Legault is correct if you're entering a line of *new* text for
the subject line. As I read your question, you're trying to "add"
fixed text (perhaps a keyword or internal distribution code) to what's
already in the subject line, and you want to do that by hitting a
button on the toolbar while reading the message? I went through
somehthing like that myself recently.
To *add* set text to what is already displayed in the subject line
(and keep that intact) try using a concantenation operation (&) to
modify the value represented by the objMsg.Subject object, something
along the lines:
objMsg.Subject = "Prepended text here " & objMsg.Subject
or
objMsg.Subject = objMsg.Subject & "Appended text here"
Once you save the complaete VBA macro, depending on OL version you can
create a button to fire the macro. Refer to
http://www.slipstick.com/outlook/toolbar.htm
/Sam/
(No MVP title - still stuggling with my own projects....)