How do I manually enter Clockwork ROM Recovery?

I have Droid 2 Global (droid2we) and I've tried Power + Volume Up, but that doesn't load any recovery mode. I've also tried Power + X but that loads the standard Android System Recovery , which won't install unsigned zip files. I can load the Bootstrap Recovery app which will let you reboot into Clockwork Recovery mode, which does work. However, that requires a functioning system which makes it a pointless way to launch a recovery mode!