Needs to be setup first through Settings --> System --> X-Button.

HTC X-Button v1.50 is a great Task Manager exclusively for all hermes/TyTn lover!

***** [Jan 9, 2008] by Nohtreya using HTC Herald on WM6
Yeah Thanks man This is working Great for me :D Thanks alot!

**** [May 25, 2007] by sunit02 using tmobile wing
This program came with my tmobile wing. There's an option to enable it on the today screen under settings > system tab > task manager > button tab > check enable quick menu on Today screen box.

* [May 18, 2007] by Vay Anyfantis using Qtek S200
I installed it, but the X-Button isn't in Settings --> System.

**** [May 18, 2007] by Patrick Lucas using IPAQ 2490
Installed this but coulkdn't launch it! Couldn't find a shortcut for it! Where does it get installed?