Any Photoshop type EXPERTS?

Ok well at least better than me...
What I'm trying to do to a picture is make it black and white but let one thing like lets say a rose stay with its color, does anyone know how to do that? If so would you care to share? I can't it at all....TIA.

I know one of you ladies learned how to do it one time but i didn't ask then, now look at me. Sorrry for any inconvenience.

click here and i bumped the thread for you too

heres a link that shows you how, for other things always look on youtube.com they have every video on how to do do anything whit photoshop thats how i learned!
Link

Yayyyyyyyyy.... Thank you soooo much ladies. I knew LIW to the rescue.