Thank you, Lisa. My local supermarket has really enticing phals right now. I'm thinking of picking up one and trying semi hydro on it. I won't try it on my cattleya or renanthera though, after the advice I've gotten.
Bill, your point is well-taken. It's difficult though, for a beginner like myself to figure out which orchids would do well in my own home. I had read in a couple of different forums, for example, that renantheras are some of the easier orchids to grow. That may well be the case for some areas, but apparently that's not true for New England. A problem with the internet is that sometimes there's too much info!