Patrick,

>I'm not familiar with the ?, a typo yes?
>
>[Edit]
>Ah, not a typo. Allows the null check somehow. I'm not finding this idiom/operator on the net or MSDN. Can someone tell me the name? Give me a pointer to this? Thanks!
>
>{Edit]
>Found it: C# 2.0 Nullable type modifier.

You did a great job answering your own question <s>! Yes, nullable types are a nice new feature in .NET 2.0 that allow you to store nulls in value types such as integer, boolean, double, etc.

Best Regards,