I have Adobe Photoshop 6 and for the longest time I've wondered how you tint a picture. Like say I want my whole picture to be tinted blue instead of the original colors. How do I do that?

Thank you!

I have PS7, but I assume it's basically the same thing.
If you go to image --> adjustments, there's a bunch of options there where you can play with the colors. Color balance is probably the easiest to do what you want, but you can always play with levels and adjust each of the individual color channels.

I have Photoshop Elements, so I'm not sure if it works the same way, but you go to Layer Styles, and there's an option for Photographic Effects and you can change the tint there

I have PSP8 but you can try to colorize the image (adjust>hue and saturation>colorize) - perhaps there is something similar in PS