You can't. All you can do is manually reset the counter to 0000. I rename all my image files anyway; I shoot with multiple bodies and have to in order for proof galleries to sort in chronological order. And having shot over 70000 frames, I have to rename or I'll have several files with each possible filename. Photoshop has a very useful batch rename tool. I use it to rename my files to YYYY-MM-DD-XXXX, where Y, M and D are year, month, and day, and X is a 4-digit counter that starts at 0001 each day.