To my knowledge (and someone please correct me if I'm wrong) Celerons based on the P3 have always worked in the dual mobos for the P3. So a Celeron Tualatin should work in a dual mobo designed for the Tualatin. However, I don't think Intel officially supports doing this. (Could you imagine the chaos if they did, what with the price difference between the Tualatin and the Celeron and all? Heh heh.)
But I don't actually have one running, so I can't say for certain. Ergo, don't take my word for it. Wait for someone who can officially state without a doubt one way or the other.
<pre><font color=orange><b>du hast den Sweater verkehrt an</b></font color=orange>
Oh my!</pre><p>