None of my orchids will flower and one is dying.

[ambersartain]

As far as the vaporizer, I have one and I was using it for a while until I realized it was getting really hot underneath it and I got scared to use it anymore because I'm gone most of the day. I'm wondering if humidity trays might help.
The shop light is just one I got from Lowe's a while back and it has an old full-spectrum bulb, which probably needs replacing, and one I just got last month that said it was for house plants and aquariums. I'm not home so I can't say for sure, but let me try too look it up...Okay, the plant light is 40 watts, T12. The other one, since I've had it a while now, I'm not sure, but it used to provide full-spectrum lighting for my bird. I know it used to light the heck out of my room, I think it was called a daylight bulb because I remember the name sure seemed to fit. Probably needs to be replaced now. So, and yes, you can laugh, two 48" T12 bulbs on an old shop light. They used to be just an inch of two away from the tallest plant, but I moved it up to make room for my sister's, until I figured out it probably didn't need to be under the light like that.
As for my sister's orchid, it only has two leaves left, so I think it's making its own effort to stop losing water from its leaves. A couple days ago I soaked some spagnum moss and put it on top of the bark because I noticed the top of the bark would dry out really fast and I thought maybe it might raise the humidity for the rest of the plant, although it's a really tall plant, so I don't know if it really helps that high up. I haven't managed to find a bag big enough to fit over it, but I'm a little scared to try it because I put an oncidium in a bag once trying to save it, but I made the mistake of closing off the bag, so yeah, it kind of molded. Stupid me, should have just left it in the palm stuff. I'm just very paranoid about root rot because I used to be the type (probably still am) to try to save orchids from chain stores. I at least should've waited until I saw new growth. I'll probably just buy her another one when I get the chance. Can anyone recommend somewhere to buy one from?
Oh, and I'd like to post some pictures but I'm have trouble getting them small enough to post. Once the file size is as small as is specified, you just can't get much detail out of it. Maybe I could post them somewhere else and link them into here? They're really not bad looking. They all have new growths on them right now. The epi. has three. Though it is kind of disturbing to look back at old pictures and see they haven't really grown. Last summer I put them out and they got sunburn. Any advice on how and when I should put them out next summer to avoid this? I live in northeast Mississippi. The window is west facing. That is probably the worst? Right? There is also a south facing window, but the neighbors house shadows it alot of the time, and also, my bed is in front of it. Also, last time I put them out, they were on the ground, and somehow managed to get alot of dirt in the medium. I think the earthworms liked it inside there or something. I'm not really sure of a good place to put them outside. Sorry if I'm rambling.
Oh, and I've had the epi. and cattleya about 2 years maybe and the dend. I've had for probably about 5 so I'm guessing they're mature. The epi. and cat. I got from lowe's in bags, I think bare root. They've never flowered. The epi. does really well considering I don't really know what I'm doing, the cat. seems more picky. The dend., well, the more recent two were a gift from my current boyfriend and the dend from a previous boyfriend. It was from Wal-mart and was in flower when we got it. It also didn't have a tag so I have no idea what species it is. It has purple flowers. I've only seen it flower the once though. If I need lights, can somebody recommend some good yet economical ones that can hang from the ceiling? And suggestions on the humidity problem? Maybe I should measure and make sure it's a problem. What would you suggest? Oh, and the lights are on a timer. What should the timer be set for?
Thanks.