you can simply turn on scripting the trigger in scripting options. Once you do that, ask it to script a CREATE on the relevant table, and you should have the trigger code.
I suspect you're not reissuing the insert command. If you don't specifically do an insert based on the inserted virtual table from within the INSTEAD OF trigger, nothing gets inserted.
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Your lack of planning does not constitute an emergency on my part...unless you're my manager...or a director and above...or a really loud-spoken end-user..All right - what was my emergency again?