I just recently got a D200 and I have noticed that if you clear out the memory card, the file names are also reset. I have previously worked with Canon digitals and they assign sequential numbers for filenames, but it seems with a Nikon, if you offload the memory card, the next batch of pictures will have the exact same series of file names. Is there any way to specify more unique naming conventions? (like having the sequence continue until it loops or using date variables in filenames?)