Question about changing the startup image with BootXChanger
 

I think I am missing something. Ive used this tool about a year ago on a PPC with good results. Using it with my Leopard install has been less successful.
I must have missed the part on the site/manual where it says the actual limit to file size. I mean I understand 128x128 or less & less than 100 colors but I have made even the most rudimentary images and a dozen formats some as small as 1k and still it will not allow me to use them.
I have used Photoshop's Save for Web function and reduced the colors adjusted quality. I really don't mind changing the image but I wish I had a file size to shoot for.

I've been having the same problem as well =/

As far as i know it modifies boot.efi which we dont use, so pretty useless on non-macs.

edit: oops, i missed this is a general Apple sub-forum :)

Chameleon lets you change the boot logo and background. Not only that, but you can use 24bit (transparent) PNG files too.

do you know how to do this with chameleon?

Edit the pictures in /Extra/Themes/Default (or whatever theme you specified in com.apple.Boot.plist if you use that method).