.pns format question

[PlayboY]

http://www.liquidninjas.com/dc/ln_dc_sig.php?xuser=[MADshrimp]-PlayboY&xteam=3365&xskin=f_xs

How and with what program can I change the background on this piece of art. Because we'd like it to integrate in our forum(design).
www.madshrimps.be/forums
see what I mean? Tnx a lot.

[IFMU]

Bug some of the guys in this thread (http://www.xtremesystems.org/forums/showthread.php?s=&threadid=6714). They should be able to help you with making something up that would be better for yea.