snap to grid?

is there a setting where I can make a grid on my game like 52x52 and make things snap to it? my game is going to have A LOT of actor blocks that make up the ground and stuff, and its taking forever to drag it to the scene and line it up with the arrow keys.
Comments
http://www.deepblueideas.com/Deep_Blue_Ideas_Ltd./Screen_Grid.html
oh well I guess I will just do it one by one.
thanks.
(I did in Gimp > Image > Configure Grid... set square size & bg/line colors... View > Show Grid... and take a screenShot {[shift] + [] + [4] should change cursor to drag-able area...and at release...put a shot on your desktop}
no 'snap to'... but works... for eyeballing...
MH