[texhax] diagrams on Windows

[David Romano]

A student of mine who is starting out with LaTeX on Windows, is in need of 
a way to produce diagrams. (She writing a paper in 2-dimensional category 
theory, if that helps.)

Her operating system is Windows XP and she uses WinShell as a front
end.  She tried to follow directions for the diagrams package by Paul 
Taylor, which says to copy the macros on his website into her TeX macros 
directory, but she doesn't know where that would be, and I can't help her 
because I know absolutely nothing about Windows or how TeX is ported to 
it.

I'd be grateful for any help or direction!

Thank you,
David Romano