You need a windows based svn application to download it from a svn repository.
I need a WTF?
When installing Cygwin, make sure you tell it to install svn, you may need to look around for it as i do not know where it is.
Also, have you even tried typing "svn://svn.pspdev.org/psp/trunk/zlib", or have you just looked at it and got lost.

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Were exactly do I type this? PSPide is just a huge text editor... that compiles things... I tried putting that into a webbrowser, but that didn't do nothn
Links:
zliblibpng
Just do this:
1, Download zlib.
2, Untract it.
3, Change into the directory "zlib" (cd zlib).
4, Compile it (make).
5, Install it (make install).
6, Download libpng.
7, Same as #2
8, Change into the directory "libpng" (cd libpng).
9, Same as #4
10, Same as #5
Hmmm im good until about step 3,
I dowloaded both files, then extracted both files into a random file on my hard drive, Then I got confused...
However, you should really learn how to use svn.
No thank you.
