I'm new to photoshop and I'm having problems with the marquee tool. Instead of the marquee selecting only one pixel at a time, the tool will select the pixel and a little bit of one of the surrounding pixels. I want everything to align perfectly with the grid, but I can't seem to fix the problem. I think it was all working fine until I accidentally rotated the whole layer with my mouse- I am using a macbook and the mouse does that sometimes.... Anybody know how to fix this? I need to get this resolved quickly, because I'm on a deadline... Thanks!