Can u just plug the tom tom truck sd card in to a compatible device?
some you can do but like mine you cant. its easy enough, just copy some ones card and use fast activate to “marry” it to your tomtom unit.
how do i go about doin this do i need software etc
you need to copy someone sd card and dowload fast activate from sites like navitotal onto sd card and use it to patch everything to your unit. easy to use takes 3 or 4 minutes. 
thanks
your welcome, shout if you get stuck. 