Tomtom 3 Maps

I have installed TOMTOM 3 on my PDA, when I go to use tomtom navigator I get an error msg saying "No maps found, please install and activate an original TOMTOM Navigator 3 map first." My tomtom 3 maps are on a SD Card inserted into a slot on my PDA, how do I get my maps from the SD Card to my PDA? Any help would be greatly appreciated! Thanks

The maps have to be on the SD Card.

You say "I get an error msg saying "No maps found, please install and activate an original TOMTOM Navigator 3 map first."

Where did you get the SD Card from? If second hand or purchased from eBay the maps may have already been activated, in which case your only option would be to purchase TTN5 software and maps. You would have to activate the TTN5 maps by entering the product code of the software and you'd get an activation code. This is to stop piracy.