Selecting the same color range in an image

Hello, I'm a newbie and I need your help,

When I have an color image I sometimes need to select a certain color from all the image. Is there a way with Photoshop CS2 to make this selection so the program figures out which areas have the same color specified and select it also? (did I explained myself?)

In other words if I want to select, say dark red in all the spots with the same color range, can I make the first selection of the color anywhere in the image and then use any selection option so it selects all similar colors? :confused:

Click on Select > Color Range. Click with the eyedropper in the image on the colour you want to select. The selected colours will show up white in the dialog box. If you want to add colours to the selection, click on more colours in the image with Shift held down. To remove colours from the selection, click with Alt held down. Also you can adjust the Fuzziness slider to fade out/fade in more similar colours. When you're happy with the selection in the dialog box, click OK to apply it to your image

Thank you for your help, mate