QUOTE(MrTouz @ Nov 3 2007, 11:50 AM)

there is not much a difference ?
i mean, when you are going to slice, you actualy slice an image, an element, a surface, so it can be gif, bmp, psd, or what ever once your done slicing you gonna save for web... and dang dang dong its gonna save as .gif
psd will be if you want to redesign the site... but thats not slicing anymore...
The psd would be good for things such as getting the part for rollovers, or making the images for the nav buttons seperate so you can add as many as you want.