Not funny...

Seriously, say I want all that.
And I want to use .Net native abilities as much as possible.
And I want to declare as much as i can rather than hardcode each time.
Something like:

[TransactionAttribute(TransactionRequiredPreExisting, All)]
public class CustomerEntity: Entity {
[PersistensAttribute(true, RequiredField)]
public String Name {get{...} set{...}}
.....
}

[TransactionAttribute(TransactionRequiredNew, All)]
public class CustomerBO: Process {
[SecurityAttribute(Deny, All)]
[SecurityAttribute(Allow,"Admin")]
public void removeAll() {...}
...
}
And I want it to be my business layer serving multiple clients: Web, WebServices, WinApp, ConsoleApp...
What do I do?
I undrestand I have to write (buy) some ORM thing to use great brand new state of the art ADO.Net
Is it true for the rest?