R commander

I want to install R commander in my PC.
I went to UBUNTU software center and try to install it but it shows followings

Package dependencies cannot be resolved
This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time.

Details
The following packages have unmet dependencies:

r-cran-rcmdr: Depends: libc6 (>= 2.1.3) but 2.13-0ubuntu13 is to be installed
              Depends: r-base-core (>= 2.12.0) but 2.12.1-1 is to be installed
              Depends: r-cran-car (>= 2.0-0) but 2.0-7-1 is to be installed
              Depends: r-cran-sm (>= 2.0.12-2) but 2.2-4.1-1 is to be installed

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: r-cran-rcmdr (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Wed May 4 21:25:45 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: rcmdr
UpgradeStatus: No upgrade log present (probably fresh install)