Just to mention it again: It's not really a good idea to copy the Finder and start multiple instances of it. There is A) not really a reason for it and B) problems down the road, since the Finder's automatically updated with software updates, whereas the copies wouldn't be.
Mac user since 1987. Running Mac OS X 10.8 Mountain Lion on a MacBook Air 11" & an iMac 27" and whatever's newest for my iPhone 4s, iPad 3 and AppleTV 2.
Apple Certified System Administrator 10.6, Apple Sales Professional 2008-2011, Apple Certified Mac Technician.