I'm not sure if this post goes here or in the AE forum. But here is goes. I'm a flash newbie making an animation in ae for a web banner for the first time. I found a great article that explains how to render out everything. But, I want to make sure that I set up the composition correctly. The specs I was given are 728 x 90 pixels. I am assuming that that is the size I set up the composition since the defaut web banner size default is 468x60.
The 'default' one is an IMU Full Banner, yours is a IMU Leaderboard. For the specs on all these banners, check the IAB Guidelines. So yes, you can go and set your composition to 728x90.
General notice: from now on, I would like to ask everyone to put [AS2] or [AS3] (corresponding to the version of actionscript you are using on your project) in front of their post titles when the question is actionscript related! Please help us help you faster. Thank you.