Howto Install Wine in Ubuntu

Add the winehq repository : Open up a terminal Applications->Accessories->Terminal
Add the gpg apt key: wget -q http://wine.budgetdedicated.com/apt/387EE263.gpg -O- | sudo apt-key add -

Add the Repository via wget:
sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/hardy.list -O /etc/apt/sources.list.d/winehq.list

Update the apt sources and install the latest wine!

sudo apt-get update ; sudo apt-get install wine

Done, now you have the latest wine package installed!