Search Button

Not sure if this ?? should go here or Other Apps forum. I have discovered and installed a Search app called UltraSearch from this location http://www.jam-software.com/ultrasearch/
What I want to do is have the Search Button in the PA Menu launch UltraSearch instead of Windows default Search; how can I change that?

This UltraSearch is amazingly faster (I'm not touting; just discovered it); found 7903 records across two drives in 8 seconds, compared to Windows search taking 90 seconds.

Hope someone can walk me thru this; Support forums are the best.

Thanks