depends on your league settings (number of teams, number of starting WR positions). most likely, no. antonio bryant is the #1 there this year (and he'll stay that way all year). if you are in a keeper league, he's a good pickup. for anything else, however, i think it is better to look elsewhere.
remember him for next year, though. cleveland will be pretty good there with 2 REALLY good receivers, KW2 coming back (barring another bonehead move) and a whoping $30 million to spend (they are already that much under the 2006 cap)). also, check out charlie frye if given the chance - he's gonna be a player when he starts.