Yeah, Sirkent's right. But in Geocities make sure you upload the file first, then Select the Insert Code feature. Copy and paste that code into This box, and then drag and drop it where ya want it to show up.

On another note, you are only alotted 3MB of Bandwidth a day before geocities will shut you off for that day. So flash generally does use up that Bandwidth pretty quickly. What I used to do when I used flash and geocities, was I created a different account for all my flash movies and linked to them.