>>Then use a dictionary
>
>Yes, we could use many other alternatives. I just find it weird that the key support is just not there for the Remove() method.

For keys ( never used the Collection class )

A dictionary ( separate key and valye ) http://msdn.microsoft.com/en-us/library/xfhwa508.aspx
Or HashSet http://msdn.microsoft.com/en-us/library/bb383091.aspx or a SortedSet http://msdn.microsoft.com/en-us/library/dd412070.aspx