Yes... here's the syntax from Books Online (comes free with SQL Server)...
SET IDENTITY_INSERT [ database. [ owner. ] ] { table } { ON | OFF }
... but, generally, there's something really wrong with your design if you have to do something like that.
--Jeff Moden
RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row. First step towards the paradigm shift of writing Set Based code: ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.
Change is inevitable... Change for the better is not.