Found And Lost Desktop Grid Adjustment

I stumbled upon an old XP desktop appearance adjustment in Windows 7 which allowed me to set the spacing between desktop icons, both horizontal and vertical.You could also choose the font and the font size and, most importantly, the icon size. I was delighted. I could order my icons just the way I needed them for my busy desktop. But then my water-cooled processor water pump broke and spilled water in my tower. Hours later, I had an air cooler on the processor and all was right again.I could not remember how I came to that wonderful desktop grid adjustment box.I searched for a long time but have not been able to track it down. So now I wonder if any of you savvy experts could be kind enough to point the way?