Hi, I am making an app that fetches XML data from the internet and put it into a NSTableView. It is like Chapter 28 in the new 'Cocoa Programming for Mac OS X ed. 3' except it used the Digg API instead. The problem is, the NSTableView can't sort the rows. Does anyone have any ideas of how I can make it sortable? What should the Sort Key be for each column be in IB? Any help appreciated!