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How on earth was this done with a locked Bootloader? (Forgive me if I'm asking a stupid question, or if I don't fully understand how the booting of the ClockWorkMod recovery is done)

-Install the App Bootstrapt app (.87 version so far)
-Run app, hit install
-It should automatically place a check in Recovery Active, if not, check it
-You should be good to go, Power Down
-Hold M hard key, Hit Power.
-White screen comes up instantly, use volume down (ONLY) to select last option "BP Tools"
-Use volume up (ONLY) to select.
-You will see the standard boot screen, then Clockwork Mod will come up (now you can use up or down to move selection and power button to select options)
whats that part about a check in Recovery Active? when i select BP tools my phone reboots normally so im guessing thats the part im missing.
Are you using hashcode's bootstrap from the above post, or koush's bootstrap from the market?
If you are in hashcode's, there's a checkbox that needs to be checked.
If you are in koush's, you don't reboot to BP tools, you just fit reboot recovery.
I would recommend using koush's bootstrap as his supports custom ROM flashing.