Yes, using simple skin v2 is THE problem. It was designed with a specific purpose, but is already a few years old. Modern skinning has not stopped there, and much more options are now available.
Also, using an existing skin and just changing the griphics could still be considered "Ripping", and is very much frowned upon. You can use the code from the official Nullsoft skins, those are the skins distributed with the winamp install. The use of any other skin would require permission from the authors.
You should go to the modern skin forum, post what you have and ask for advise on how to turn this in a complete skin.
You already have a number of threads going there, you could possibly use an existing thread for this purpose.
"We are all faced with a series of great opportunities brilliantly disguised as impossible situations." ~ Charles R. Swindoll