Im happy people like my "little" collection...
To all the people that don't know how to use them...
Well I do hope you all know that these icons are intented for xboxMediaPlayer, so using them for Avalaunch would be possible, but you would get crappy quality pictures, since the images for Avalaunch is 128x128 not 64x64 pixels...
Well, first of all you have to do like ddh says, get a program that is able to convert the files.
Then here is the crappy part...
Each files has to be name excactly the same as the folder of the game of which the icon is intended.
So you have to rename each icon file you want to use.
If you still can't figure it out, consult the xboxMediaPlayer manual...
Im still thinking of opening a page dedicated to icon for the different Dashboards out there... if people would want such a site...?