how are they different? are they coming from unknown people, or from your contact list? or do you mean you get a URL message or WWWpager? or are they icq advertisement?
i'm just guessing here, but you can try to go to preference -> security & privacy -> ignore -> check the box for "do not accept www pager" and "do not accept emailexpress"
if it's icq advertisement, go to preference -> misc -> uncheck "show icq announcement"
not sure if that's what you want... maybe we need more info and/or maybe screenshots?
-217-