To make a winamp 2 skin, you need the base pieces. Its a bunch of bitmaps which each one makes some part of the skin. There is a volume one which has 15 segments going down, which if put together makes a animation... thats what happens when you move the vonlume up/down. #2 skins are way easier than winamp 3 skins, but still very hard to make the skin look professional. I could detail everything for you, but it would take me weeks, since i would go further into detail than this official highy detailed section in winamp on how to make a winamp 2 skin: http://www.winamp.com/nsdn/winamp2x/dev/skins/;$sessionid$LKTZOVABKCERM5YAAAARC0I
Just go down the index on the list that has some of the following in iit:
Base Skin
Main Window
Equalizer
Playlist
Minibrowser
Read everything carefully.. you'll understand everyhitng at the end of that
now on the other hand, winamp 3 requires a lot of coding for making invisible areas in the skin. Win2 lets you do that... but you cans really shape it any way you want... it only stays in the rectangular region. heres winamp 3 how to skin: http://www.winamp.com/nsdn/winamp3x/skinning/;$sessionid$LKTZOVABKCERM5YAAAARC0I
Go from there, then tell me what you really meant