reshape::rename package unable to install !?!

Greetings all,
I have been working with RStudio and R only for a little while.  I
came across a package called 'reshape' that helped me 'rename'
columns.  Unfortunately, my computer got hosed (too much playing with
linux too late at nite) and I had to re-install everything, BUT when I
tried to reinstall 'reshape' or 'reshape2' I COULDN't.  Is there a way
to get over this hurdle with reshape or is there another command I can
use.  I am stuck because my programs up to this point used 'rename'
and now I have to redo some work.
M

Matt Curcio
M: 401-316-5358
E: matt.curcio.ri at gmail.com