Transparency in photoshop???

[MartinW]

I noticed a lot of people here are good at PhotoShop. I have a gif that I want to set the transparency colour to white but I can't figure it out! I tried for at least an hour before I got too frustrated. Can someone please tell me how to do this!? I used to use PaintShop Pro until recently and PhotoShop is really pissing me off.

Koj

[Cruciform]

http://www.mccannas.com/pshop3/pshop31.htm