When starting a new grid-based design I use Adobe Fireworks for the initial screens. Here are my starter files for the 960 grid system in 12-column, 16-column and 24-column formats. I actually have never used the 24-column one but I made it anyway. Right click these and save them to your local drive.

Vertical guides only

Vertical and horizontal guides

Licensed under MIT & GPL licenses (your choice)

Tags: , , ,