When you DL SlideIT just click on the app it provides for the easiest install. For the long way go to settings. Then click language and keyboard. Click the SlideIT Keyboard Demo option. Back out.I downloaded slideit, but i can't get it to work. Or does it not work if you have Handcent installed?
Go into messaging or somewhere else where you can input text. Hold down on the text block. An option will come up on which input method you would like to use. Choose SlideIT!