Windows DVD Maker Aspect Ratio problems

Many thanks to the discussion thread above, where on page 5 the following instructions are given:

1. Download and extract wmv-aspect-ratio-changer
2. Run WMVARChanger.exe
3. Load each WMV file you want to remove the par and dar values from. It will load up and display "Current Aspect Ratio" X and Y values
4. Click "Remove"

That's it! The change is immediately applied to the file and you can verify that par and dar values have been removed while sar remains intact by using gspot.

I then tried burning my now-altered WMVs using WDM (Windows DVD Maker) and widescreen functions correctly on the final DVD at last.