HELP!! I had 8 down to 4 more thank likely 4

[Tcup]

I bought 1 lonely orchid about 2 years ago, it looked lovely with deep reddish purple flowers and I feel in love. I have since been given and purchased a few more however they are slowly fading away.
I have 5 left, I think one might be gone so probably 4 left and need helpful advise on reviving them.


To boot i only know the names of 2 of them
I believe they are all den.'s though well i am really not sure about Orchid 5
Any help would be greatly appreciated.

Because I am not sure if i posted the pics right you can see them at
http://photos.yahoo.com/amy_bush@sbcglobal.net
Thank You