Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
It seems the link tosses you to a deviantart ad or something then you have to click 'continue' or something. Maybe that's why?

Basically I have a nice Air icon but it's too small. I think this one would be the right size but it's in some png format that I'm not familiar with and the background is grey or I can't free the image from the background or something. :)
 
Thanks but I can't get that to work either. I drag an icon there and it acts like it's doing something but doesn't. It did do something to 2 icons but they still have the grey background and I think are still png. This is obviously beyond me and my applications folder is now filled with files, etc. it shouldn't have.

How about resizing a working icon on my desktop? Is there no easy way to do that?
 
You could try opening the .png in preview and then saving it as a jpeg. You can then put it into img2icns to turn it into a .icn file. Re the grey background - not too sure how you get rid of this, unless you put it into photoshop.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.