Dear ewbie,

Your plant looks like a coelogyne species to me. One way to find out is looking at the roots. If some of the roots have hairs then it is most likely a coelogyne. Coelogyne roots are similar to Paph roots but they look brownish, more fragile and smaller. Stanhopea roots have no hair and look shiny white quite similar to oncidium/dend/catts roots. BTW, good call, Tim!!!
Have fun with your plant.

Dear Valb561,
Your unknown orchid is most likely a terete vanda ("papilionanthe teres"). I have two terete vandas! To know exactly what it is, however, you probably have to wait until it blooms. Have fun with your plant.
Hoa.