1) Open up [Terminal]
2) Type in curl -O []://ftp.gnu.org/gnu/wget/wget-1.13.1.tar.gz
3) Unzip using tar xzvf wget-1.13.tar.gz
4) Run cd wget-1.13;.configure
5) Run make
6) Run sudo make install

NOTE: IF IT FAILS THE FIRST TIME, YOU MUST INSTALL MAKE CLEAN BEFORE RUNNING MAKE



TIP: REPLACE [] WITH STANDARD HYPERTEXT PROTOCOL.
TIP: REPLACE WHATEVER IS BETWEEN THE [] WITH YOUR INFORMATION.



Hope that helps!