How to color balance this pic?

Hey gang,

My friend’s mom took some pictures of our recent performance. She did not use a flash and it was an indoor (somewhat dark) auditorium. All the pics ended up looking like this:

Really dark and really red/orange.

Can you PS geniuses think of a way for me to make these look better? I’d like to post them on our website but right now they look like crappola.

Thanks for any help. Oh, I only have PS 7, no CS.

:hr: