Set the map where you want the zoom to be, then right click the map and choose "Save Map Scale". Then any time you want to set the map back to how you want to see it, just right click the map and choose "Restore Map Scale" from the menu. You can also set a key binding for this: esc > Key Bindings > Other > NxMAPSCALERESTORE.
You might want to
UNcheck the "Auto Scale" box at the top right of the minimized map, also.
Curse.com and WoWInterface.com are the only two sites that have Carbonite and its' modules legally, so one is as good as the other to download from.
EDIT: This is from ircdirk's signature:
/EDIT