We need to get all four screens in the office correct and similar, Two Sampos AlphaScan 712, 1 Samsung Syncmaster 753vfx and a laptop. which at the moment looks the best

This one at home I can live with, but everything looks a bit red.
So any ideas suggestions. And do not tell me to throw them all out.
Is there any kind of test card I can download or something.
They all look a bit "warm"
Thanks.