garmin c310 lost maps

[salvasot]

i'm realy new on gps and i bought a farmin c310 with a 256 mb memory with preistalled maps of italy and greece.After i"£$%^&^.... the memory card is empty and on the screen he is saying use map software with route information......i searched everything on the box there is nothing.....no cd with maps ....no reference to some map program....nothing.......i think i just lost my money.....please help me.......what program i have to buy........thanks

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