1. Miktex Miktex (etc 2.4) http://www.miktex.org/Setup.aspx
e.g., basic-miktex exe (~ 32 MB).

2. You need A latex distribution (e.g., Miktex)
A post script viewer (e.g., Ghostview)
A Latex editor (e.g., LatexEditor)
Install everything in this order, follow default instructions

3. Latex Editor E.g., the Latex Editor
E.g., version 1.2.1

4. Typical path settings C:\texmf\miktex\bin
C:\gstools\gsview\gsview32.exe

5. Ghostview http://www.cs.wisc.edu/~ghost/index.html
Install Ghostscript first:
e.g ver gs853w32.exe on
Then install Ghostview:
E.g. 4.7 gsv47w32.exe on

8. Mac OS http://www.esm.psu.edu/mac-tex/default9.html
MacGSView 2.0b3