The best tool to work with interlaced and transparent GIFS is PhotoGif, a Photoshop Plug-In you can download a demo version (it's a shareware) at :

http://www.aris.com/boxtop/PhotoGIF

PHOTOGIF PAGE TEXT

"The only transparent and interlaced GIF89a support available for Adobe Photoshop"

PhotoGIF is a file-format plug-in that adds the ability to create transparent and interlaced GIF89a files for World Wide Web use from within Adobe Photoshop 2.5.1 - 3.0.4. Since PhotoGIF is a file-format plug-in, use is as simple as 'open' and 'save'. PhotoGIF has many intelligent features to save time and reduce GIF file size. Alpha channel transparency mask creation when reading transparent GIF images, transparency designation by alpha channel mask or by color, automatic palette sorting, and automatic bit-depth reduction are just some of the features that make PhotoGIF the simplest and easiest method to prepare your GIF images for the World Wide Web.

Review from the Editor of MacChat:

PhotoGIF

-------- By Tony Lindsey

Sometimes, it's hard for me to remember where I get things. I get a LOT of files attached to e-mail messages, and I sometimes forget where they come from later on, usually when I'm staring with dismay at a hard drive containing 1.4 megs of free space.

One of these Mystery Files turned out to be quite nice for somebody who works on Web-page graphics on a regular basis, as I do. PhotoGIF is a Photoshop plug-in that makes it easy for me to save GIF files as interlaced images with a transparent color, allowing non-rectangular images to "float" on the Web page. I discussed this same concept back in Mac*Chat issue #67. I recommended a couple of separate programs (in addition to Photoshop) that did the same thing. This plug-in makes it one-step easy.

boxtop@aris.com
http://www.aris.com/boxtop/PhotoGIF
ftp://aris.com/boxtop>