For those asking about
http://code.google.com/p/steamprofile/.
Just use the same instructions as given here however note that you need only include the javascript files included in the new release you do not need jQuery.
If you want the Steam profile to show up on every post simply just move it (the code from step 14) before the code found in step 13.
Also in the default CSS to fix the quote overlap problem you must add a z-index. I used the following to properly display all images and fix the quote overlap.
.steamprofile z-index = 1
.steamprofile .sp-extra z-index = 2 (this just pertains to the stuff that rolls out)
.steamprofile .sp-handle z-index = 3 (this is the part you click to roll out the extras)
Hope this helps!