I would like to use FileStream with Nhibernate.
The only post I found on stackoverflow is Sql 2008 Filestream with NHibernate
In the meantime, Nhibernate 3.0
It is not planned to be supported by nhibernate. (WONT FIX)
http://groups.google.com/group/nhusers/browse_thread/thread/e4a8f038f9c40a0d/a63ac4a8ce4f1244?pli=1
I hope it will change in the future ... maybe an extension (the open source magic)