You need to post them to Picasa or Photobucket or some other photo hosting site. Then copy the image tag for each picture to your post on NSxB. Make sure the files aren't too big. For instance, the following picture is from photobucket...
and the tag is http://i410.photobucket.com/albums/pp190/Geezer41/Scion xB2 Stuff/Img_3277_sm.jpg plus the IMG and /IMG tags (in brackets) at either end of the link. This is a big image (640 x 480). If you're copying a picture from another site you need to follow this same format.

and the tag is http://i410.photobucket.com/albums/pp190/Geezer41/Scion xB2 Stuff/Img_3277_sm.jpg plus the IMG and /IMG tags (in brackets) at either end of the link. This is a big image (640 x 480). If you're copying a picture from another site you need to follow this same format.