Point your browser at http://www.winehq.com/ Dig through the site to grab the latest source code, and download to your /usr/src directory.
tar zxvf Wine-blah-blah.tar.gz
cd wine-blah
./tools/wineinstall
The wineinstall program will configure, compile, and install Wine for you. You'll want to be root for this, by the way. It'll even detect if you're on a dual-boot system and fill in the proper paths for the registry. Once the compile is running, you've got some time to kill. Wine takes a while to compile, but it is worth it.
If you're not root when this is running, however, it'll build everything as simply a normal user . You can then install the software by running wineinstall as root.