gps map question
 

I recently got navtour for the bluetooth gps i bought (GlobalTop G33)...are this two compatable with each other and if so are they compatible with 6.1? my second question is i have a 1 gig chip but its 1.4 gb but i notice it has 2 map files one for nothern us and canada and another for the other part of the us....if i take out the nothern us and canda map so it will fit on my memory will it effect the program?