when you scan the picture, make sure you save it as a .jpeg or .jpg image for the web.
then sign up with an online picture hosting site (i.e. picturetrail.com, webshots.com, etc.) and upload you pictures.
a lot of the picture hosting sites dont allow pictures to be pulled from their servers anymore , but i heard that with picturetrail.com, all you have to do is change the extension from .ptp to .jpg when you use the button on any forum. or you could just post the link to your album.