Wine is a linux application which lets us  to run windows application in Linux OS family, yesterday (16 july 2010) winehq has released new stable version of Wine 1.2, the development team has claimed almost 3.000 bugs fixed and more than 23.000 changes. here they are several change we found at wine 1.2 Stable. 
  • Wine 1.2 support on x86-64 processors and also support for 64 bit applications.
  • There are new icons for all the built-in applications based on the Tango set for a nicer integration with the native Unix desktop look. 
  • Smoth looking on LCD Screen, The subpixel configuration is derived from the system fontconfig and Xft settings.
  • The OLE storage performance can degrade pretty badly on files with a particular layout.
That is simple way to installed wine 1.2 on Ubuntu Lucid Lynx, if you already have installed previous version of Wine you can upgrade using aptitude by following instructions below.
sudo add-apt-repository ppa:ubuntu-wine/ppa 
sudo apt-get update && sudo apt-get upgrade wine
if want perform fresh install of wine 1.2, change "sudo apt-get upgrade wine" above with "sudo apt-get install wine".