I checked 'use as default' when choosing the default launcher, but now I can't start ADW.Launcher any more

I installed **ADW.Launcher** on my Galaxy S running Froyo (2.2) to check it out. When it was installed, **every time I pressed the 'home' button, I got a choice which launcher to start**. In the end I found this irritating, I choose the default installed one, and checked the 'use as default' check box. All fine, but now, I can't seem to be able to start the ADW.Launcher any more. No icon in my application list and none on my home screens. **How do I start ADW.Launcher again** ( without re-installing it ). I verified that it is still installed on my device.