I you're using the modern skin and you haven't detached it, I believe there is a little arrow that's pointing up on the lower right corner. click that.
I want to display some web page in AVS windows, such as some ads. I want my AVS always there fixed with the player.
Which dll I should change? And Is my thought workable?
I don't have time to spoon feed you the answers to questions like this, and I doubt anyone else here does either.
Best advice would be to learn about AVS and Winamp plugins more before asking questions about development, then you can avoid most of the trivial or stupid questions.
Go get Resource Hacker and go have some fun with the (usual directory) C:\Program Files\Winamp\Plugins\vis_avs.dll, see what you can figure out with this 🙂