How do you format a digital camera memory card?  

If your computer has a slot for the memory card, just put it in & your removable drive should be visible when you double click my computer. Then just right click on your memory stick drive then click format.
If you dont have a memory stick slot, you need a read/write drive to shove your memory stick into & it is the same procedure as above. Hope this helps!

hey if u have desktop computer then connect your your digital camera with USB cabel.Now open my computer and right click on memory card and click on format.or you can use "format" Dos command with your camera memory stick drive.If you have any memory card reader then you can do it with the help of the card reader.Hope it will help you.