In fact, looking at the properties of the pics from the link you supplied, it looks like they're already there.
Obviously, hotlinking to someone else' site is incredibly rude, but you could download each pic and store it in your own webspace. So long as you aren't using them for financial gain I doubt anyone will have a problem re: licensing.
Looks like they're in:
http://www.simonspoker.com/wp-images/smilies/ with predictable names in the .GIF format, like this:
http://www.simonspoker.com/wp-images/smilies/Jc.gif
Put those addresses into your browser, then right click and "Save picture as..." Upload to your own webspace at your convenience.