Here is a guide to install PlayOnLinux on Ubuntu 13.04, you can install PlayOnLinux using the Ubuntu Software Center.
PlayOnLinux is a piece of software which allows you to easily install and use numerous games and apps designed to run with Microsoft® Windows®. Few games are compatible with GNU/Linux at the moment and it certainly is a factor preventing the migration to this system. PlayOnLinux brings a cost-free, accessible and efficient solution to this problem. Visit the PlayOnLinux Homepage.
To install PlayOnLinux click on the link below.
Install PlayOnLinux
When the software center is opened click on the Install button and enter your password to authenticate the installation. When PlayOnLinux is installed you can close the software center, to start PlayOnLinux press the SuperKey and type: playonlinux
Please note that PlayOnLinux needs the 7zip package to work, if you don’t have 7z installed on your system click on the link below to install it
Install 7zip
p7zip is the Unix command-line port of 7-Zip, a file archiver that archives with high compression ratios. p7zip-full provides utilities to pack and unpack 7z archives within a shell or using a GUI (such as Ark, File Roller or Nautilus). Installing p7zip-full allows File Roller to use the very efficient 7z compression format for packing and unpacking files and directories. Additionally, it provides the 7z and 7za commands.