Aside from Russ' excellent comments...
You can also create an album right here on this site:
http://parkerguns.org/forums/album.php?do=addalbum
Once your images are uploaded - just link them as Russ mentions. As well - any image you place in the PGCA Albums will automatically generate the correct IMG code for you - so, all you do is "copy & paste" that code into your message.
Hope this helps!
- John