I don’t really know a whole lot about the IBM plant down here – I moved to Rochester about five years ago, and IBM had done massive downsizing. They have a gigantic set of dark blue-glass buildings sprawling a good part of town, but most of them are empty. It used to be up there with Mayo for being a huge job source in town, but you barely hear a whisper from them anymore. Mayo employs over 30,000 employees in the area and I think IBM is down to around 2500. I know they are acting as servers for a whole ton of Mayo’s records now… other than that, I’m clueless!
http://en.wikipedia.org/wiki/IBM_Rochester has a bit of info about the buildings here – you could give them a call and ask. 🙂

Does IBM still do AS/400 development and manufacturing in Rochester? There’s a part of me (the part of me that wears thick glasses held together with tape) that would like to visit the birthplace of the machine I started my programming career on. Tell me there’s a factory tour with paper hats, and I’m there. 🙂