Bryco,
Without more information, I agree with Duh. Having said that, I have a few thoughts.
1. I can only assume by the naming convention of the sub-routine, that it inserts a door?
2. You do not state if you're wanting to port all the 1000's of sub's to .NET code...is this the case?
3. Can you post one of these subs?
With the conjecture above, I can think of several options, but I need more information.
Cheers,
Glenn.