Ya mustn't have looked to hard mate; either way, i've found it for you.
This is Ubuntus websight listing there packages.
I have found the wine package for you, built for oneiric. If you are not using that version of Ubuntu, then you will have to go up o the top right of the page and change it to show the appropriate version. The websight in my opinion is poorly designed in some respects. For each package it lists the dependencies which is a great, but it doesn't list which packages are already installed on a default install, which would be helpful to avoid downloading unneeded packages. So you will have to download each dependency and perhaps even the suggested packages, and there dependencies as well, and install them, and then finally install wine. You will have to find out for your self which of those dependencies are already installed because i do not use Ubuntu so i can't help you there. I hope this has helped.