you need to hold down the alt key and then type in 0169 on the number pad area of your keyboard. (the other numbers wont work).
Sometimes you also need to change to a different font to see your proper character...but the copyright is fairly universal so it should be there with most fonts.

You can find out all the extended keyboard thingies by opening up your keyboard charactermap (under accesories>system tools in your win start button...although I think it is under just accesories in win95). You can also copy and paste characters from this into your ap.

Beth

PS you might want to check for photoshop updates....I kind of remembers something about this with photoshop. Not sure if it was a bug or just someone who was not familiar with how you are to type in the numbers etc (as it is kind of strange)