Deleting+Photos

Take the SD card out of the camera and put it in your computer

If the automatic window does not open, click on My Computer and look for the card in the list. It will have 'SD' in it somewhere, and possibly the name of your camera or an icon that lookes like the card

Click through the directories untill you find the photos you want to delete

Select them with a single click (Holding down the 'shift' or 'control' buttons will help you select multiple photos at the same time)

Use the 'delete' key on your keyboard to delete the photos you have selected, or you can right click a selected photo and choose 'delete' from the drop-down menu

You will get a warning message allowing you to change your mind, but click the 'yes' option anyway :)