Legal Stock Icons

["b p" <xlacklusterx hotmail com>]

First off, sorry if this is the wrong list. I couldn't seem to find one that 
matched exactly the question.

I'm not sure exactly where it was I found it, but I got hold of the gnome 
"stock" icons in a tar/gzip|bz2. Anyways, I'm developing a Java application 
for a client of mine and used the icons in the program to make it pretty 
(and usable). This software is not yet finished or released, especailly 
because I do not know where this stands from a legal standpoint. I did not 
recieve a copy of the GPL with the icons, but I think it's safe to assume 
they are under the GPL? If so, what do I need to do to comply with the 
license? Only a few people will be using the application and I'm perfectly 
willing (and possilby obligated?) to give them the source with the 
application. They are paying me to write this application (amongst other 
things) for them. Do I need to change the contract specifying that I am 
charging them for implementation instead or is there something else I need 
to do before I can release this?

Again, sorry if this is the wrong list, but I'm really kind of lost here, 
and the last thing I want is to dishonor the license for these icons.

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