Preloader problem!

hi, i am creating a flash website, i have a preloader at the start of the site. My problem is that when i view it as it would be seen on a browser the preloader doesn’t appear straight away. i have an image with the preloader (site logo) and is 182kb file size and am guessing that this picture needs to load first for the next action to happen. if htis is so, other then reducing the file size is there anyway to make the preloader appear straight away.

is there something that i have missed that makes it delay…

please help