I've got one and had to buy a phantom power unit (strangely enough off of this board, I got an old Peavey one with Neutrik ends for a great deal). At least get one with two ins/outs on it. I bought one with four and I've needed it sometimes. They're in the $50-100 range depending on what you get.
Something like this: http://cgi.ebay.com/AUDIO-TECHNICA-...QQihZ018QQcategoryZ113484QQrdZ1QQcmdZViewItem
Also, if you had a pic preamp, those typically come with phntom built in. Hope this helps.
cheers,
scott