Putty - a free windows SSH client
Putty is useful for remotely connecting to UNIX machines.
http://www.chiark.greenend.org.uk/~sgtatham/putty/
WinSCP - a free windows SCP client
WinSCP is useful for transferring files from UNIX machines.
http://winscp.sourceforge.net/eng/
Instructions for downloading WinSCP
GhostView and GhostScript - free PDF and PS conversion utilities
http://www.cs.wisc.edu/~ghost/
MikTex - a LaTeX distribution for Windows
http://www.miktex.org/
CutePDF - a free PDF creation utility for windows
http://www.cutepdf.com/Products/CutePDF/writer.asp