Game - Making The Map Scroll With The Player

I am working on a game using Visual Basic.NET and XNA. I am having trouble making the map scroll with the player. I can move the map at a square at a time(32x32) but I don't like the way it looks. I want to move at a fluid rate if possible. I want the player to be able to walk half-way through a square then see a half-square to either direction your moving. IE: Walking left, walk half-way through a square then to the far left of the map see half of the next square going to be drawn. But I don't want just half-way, I want to be able to just have fluid movement where you can walk to an 1/8th of the square and see the next 1/8th on the other side of screen if possible... To open this project and view you must have Windows Phone SDK installed can get it from Microsofts website......Note:Only up and down movement have been added into the game.