LOL.. here ya go Frior... its a common enough thing.
Picture is upside-down or mirrored when playing DivX movies
If you don't already have the latest version of the DivX codec installed, make sure to upgrade before trying any of these suggestions.
If the video still plays upside-down or mirrored after upgrading, it's likely that you have some conflicting DirectShow filter(s) installed that are flipping the video. The two most common filters that cause these type of problems are the Bicubic Resize filter (bicubic_resizer.ax) and the G400 filter (divxg400.ax). To check if any of these filters are installed, simply look for the files in your C:\Windows\System32 directory (on the drive where Windows is installed). If you find any of these filters installed, simply goto the Start menu in Windows and select "Run...", then enter "regsvr32 /u filename.ax" in the box and click the OK button to unregister the filter.
Another way to possibly fix the problem is to goto the Tools->Options->Performance->Advanced menu in Windows Media Player and deselect the "Use video mixing renderer" option. While this option works for some it doesn't solve the problem for everyone.
Me thinks you could be watching too many videos at work! ;)