Hi to all! I just bought a new 27" iMac (I'll receive it next week). 1. I've been using a Samsung SyncMaster 2253BW as a 2nd monitor (so far with a 21,5" iMac). Could I still keep on using it, although I won't have the same screen resolution as the coming 27" ? 2. Would you have a good deal suggestion for a 2nd monitor purchase? My eyes are 90% of the time on the iMac screen, so I don't need the top of the line for the 2nd monitor. Thanks a lot!