I ended up modifying my reusable IComparer class to work on any data type that implements IComparable since our data grid now has a decimal data type for one the columns.  I'm now betting that the users will want/need to be able to sort ascending and descending, not just ascending.  Also case insensitive comparisons will probably be required (although my original implementation did have this).

Perhaps its time I Googled a more mature implementation up, CodeProject must have one already.