When working on images in Adobe Photoshop 6 I find no problems, however, when saving an image for the web the image becomes much darker than the one that I was working on.
I've looked over the settings and can't seem to find any that relate. Any suggestions?
Are you using ICM (color management) in your picture? this info is lost when you "save for the web" and makes the picture look different.
remove all color profiles for working with web graphics, then they should not change visibly (as long as you use jpeg of course...)