changing backgrounds on photos?

[Red and White]

Dont suppose anyone can tell me how to do this. ive looked at loads of tutorials but i cant seem to find one that matches my version of photoshop (photoshop elements 2.0). ive tried and failed.

gotta make some staff photos appear on a bluey whitey background.

i get all the good jobs at work

thanks

 

[Red and White]

its clearly not very easy to cut anybody out tho