Hello everyone !

I am currently working on a 3-tiers application, accessing Oracle with
given stored procedures. The presentation layer is WinForms and
WebForms, and they call Web Services to insert/update/delete/view data.

I am working on some sort of simulation for an accounting form :
1. The user launches a simulation
2. A transaction begins ...
2. A lot of computing is done is the DB, including inserts
3. The user sees the result of the simulation, and he is asked to
validate the simulation or not
4. If he validates the simulation, the the transaction is commited. If
not, the transaction is rolled back.

How can I achieve that in .NET v1.1 or .NET v2.0 ?
I am not afraid of any heavy technique ;-)

Thanks.

Alexandre