This is a Greet script. Search the Scripts and Pop-ups forum for the term "Greet" and remember to expand the time range to 1 month (or more) for decent results. The default is 1 week.
If you're looking for a specific greeting to come from the channel bot when you join, (which is what it looks like, after re-reading your post), then that's something that'll have to be put in by whomever is controlling the channel bot. Nothing you can do about that.
Last edited by RusselB; 07/09/06 11:27 PM.