Some members pm a lot and don't want to lose all their old messages when they hit the pm limit. Fortunately there's a very handy way to keep your old messages on your local computer while freeing up space in your HUKD inbox.
To export your PM's simply go to your Private Message inbox, scroll down to the bottom and choose the export format. You can choose XML, CSV or Text file. This will save a local copy on your harddrive of all PM's stored online.
You can view these files raw on your computer but there is actually a very handy PM viewer which works with the XML export.http://www.ksourcerer.org/20527/details-vbulletin-pm-reader.html
If you download that PM viewer you can read and search your PM's offline. Technically you can do this with PM's from any forum not just HUKD.