www.bungie.com
there are pretty nice pictures including some swiit headshots on this site. http://www.gamesradar.com/xbox360/halo-3/screenshots/g-2005000000000000000350 and here are some for halo 3 recon http://www.gamesradar.com/xbox360/halo-3-recon/screenshots/g-20081009113151703059 and some for halo wars http://www.gamesradar.com/xbox360/halo-wars/screenshots/g-20060927122334140029
you can find a video walk-through on youtube.com
Find them your self
There are various skulls you can find hidden in Halo: Combat Evolved. The first skull is hidden in the first room in the game behind some barrels.
The skulls are hidden all over the map. To get them all you have to do is find them and pick them up.
You can find screenshots from the documentary The Tiger Next Door on YouTube.
no.... im a holo freak.... in fact to get skulls in halo you find them when you play each level... so each level has a skull hidden in it... you just have to look for it...
To get to the folder in your computer that hold all your Toontown screenshots, go to "My Documents", then "Program Files", and then "Disney", then "ToontownOnline", and AT LAST, if you scroll down a little bit, you will find the screenshots! :)
HLG is Hidden League Gaming in Halo 3 where people find hiding spots to win matches when they have the lead. HLG WhiTeBoY
cheat codes
You can find your screenshots by going into Library, Application Support, minecraft, then there will be a folder called "screenshots"
Click START, go to My Computer, click Local Disk, then go to disney, disneyonline, piratesonline, then you will find your screenshots.