Not to sure if this is the right place to ask this but I'll continue on 
Right now, I have a 22in Acer x223w but I'm wondering if can I do Eyefinity on different sized monitors? I'm buying another 22in LG monitor from a guy on bookface but I also have a 15in old LG Flatron lying around. Can I use the two 22in monitors for gaming and keep the 15in for things like temp displays, msn, internet etc? I'm looking to do this is on a 5850 which I'm buying next month.

Right now, I have a 22in Acer x223w but I'm wondering if can I do Eyefinity on different sized monitors? I'm buying another 22in LG monitor from a guy on bookface but I also have a 15in old LG Flatron lying around. Can I use the two 22in monitors for gaming and keep the 15in for things like temp displays, msn, internet etc? I'm looking to do this is on a 5850 which I'm buying next month.