changing medium for Phal violacea

[ladyslipper]

Hi guys, I have finally bought a blue Phalaenopsis violacea and it will be shipped to me in the next day or so. The fellow I bought from said to have it repotted in volcanic stone (so semi hydroponic). I have no experience in this and would like to pot it in moss when it gets here (its being shipped bareroot). Can I change the medium when the fellow told me its growing in semi hydrop? Do I need to do anything specific to prepare it for potting when it gets here?

I am a little nervous because I am thinking that the Phalaenopsis violacea is a little beyond my experience but I really wanted to give it a try (also went WAY over my budget).

Any info on your experiences with the P. violacea that you care to give would be appreciated. I also bought a Phal, Penang Girl 'Ching Ruey' so am looking forward to some really spiffy fragrances.