HI Big Pig, welcome aboard.
I use a Mio Digiwalker running Oze Explorer, bumble bee etc.
Miopocket is designed for the Mio range including moov and works a treat, below is a link to the thread I posted on it, included in the thread is a link to the software.
This is much more than just an unlock hack - turns your navagator into a pocket pc, I would use the SD card install so you dont mess up the mio software on the flash drive.
Once you installed Miopocket you still need to download Oze explorer but an Icon is provided for when you install it.
Mio digiwalker-c320-c520-garmin etc hack