installing maps

[Guest grifone]

uys.i need you're help here cause I am totally lost

installed Garmin Mobile XT on my brand new Samsung Blackjack II.

I managed to lock my position ,Malta,on the base map it came installed with,and everything works good.

Now I downloaded the Malta map but do not have the slightest idea were to put it on my mob.

tried putting it in storagecard/garmin but it is not being recognized as an installed map when i open garmin.

please help me out

tnx