I found time today to do my own version

Here is a little tutorial of how I did it.
http://www.scrapbook-bytes.com/galle...hp?photo=20601
You can use the rulers or grid, but I love the guides. I set mine for every inch to form my own grid and make sure snap option is checked.
I arranged my photos, applied B&W gradient map, and merge layers
Then I create the grid using the rectangle marquee set at fixed width to do my lines, but you can use a brush like Natasha or the line tool. I just use the marquee b/c that is how I am used to doing it

Then do a color fill to fill the lines. Duplicate the layers and change size as nessecary to form grid.
On your layer palate, select the photo layer, and using the marquee tool again randomly select areas and go to layers>adjustment layers>color balance to tint the sections.
Hope this helps! -Ali