Colour help in Photoshop CS2 - what have I done wrong

[cakeboy]

Hello its me again!
I have been messing about with all the different colours and pantone menus and have got into a right pickle, to an extent that when I open up a jpeg that is red, looks orange on photoshop.
How do i go back to where i started, please help
Dave

[Paul]

Check what is your colour space a set to?
Have you not change rgb to cmyk?
Is your proof off?

[daviddeer]

Try resetting the preferences. First, hold down all three Ctrl+Alt+Shift buttons (On a Mac, hold Command+Option+Shift while starting Photoshop to delete the preferences.)
Now "while keeping those button held," simply open Photoshop or a file that opens with Photoshop
As Photoshop loads, you should get a prompt asking if you would like to "delete the Photoshop settings file", Click yes

You can also simply search your hard drive for a *.psp file and delete it. It will be called something along the lines of "Adobe Photoshop X Prefs.psp".
Under Vista or 7, look here:
Users/[Username]/AppData/Roaming/Adobe/Adobe Photoshop [version #]/Adobe Photoshop [version #] Settings
Under Win 2k/XP the preference file will be found at:
%windir%\Documents and Settings\[username]\Application Data\Adobe\Photoshop\[version #]\Adobe Photoshop [version #] Settings
Note that while this procedure resets the program preferences in Illustrator CS2 to defaults, it doesn’t change the Workspace preferences, which are stored in a different file. To reset the workspace, go to Window > Workspace > Default, or choose one of your saved workspaces.

Watch the [url="http://www.youtube.com/watch?v=Gp1tnUvg9uo#t=96] video here [/url] for instructions

[cakeboy]

thank-you daviddeer!
dave