RemapSoftkeys allows you to modify the softkey allocation on the Today screen. It only modifies registry entries, so you don't need to keep it installed after you set your new values !
The ZIP file contain the PPC executeable, i.e. you have to copy the contained file to the PPC and execute it there !



For NewTray, it'd be usefull to create a shortcut in the startup folder. To do this, run the file explorer on your PPC, tap&hold on NewTray.exe, select Copy, then go to WindowsStartup (or localized name, e.g. WindowsAutostart for German Windows), right softkey, Edit > Paste shortcut.