[Tandum (Robin)]

I've been scanning all my negatives to digital format and a lot of the older ones are coming up with a green hue. How do I correct these images in PS. I've tried a number of times but I have no experience in correcting daytime photos and can't seem to do it.

The hystogram for the attached image shows the blue way off to the left and the green off to the right. How to I move them?

[edit]
Don't bother, I think I got it using channel mixer ...