Even though I heart about transactional file system support since Vista, I never really tried it. So needing to do it today I looked up ways to use it from the managed world. Turns out it's not so straightforward... In the Vista RC, to use the transactional fs support what you'd have to do is just call some win32 api methods that would signal the file system functions that there's a transaction going on. So basically you would whip up a TransactionScope, call the win32 api to set the "transaction-aware"...