1) Download WolfET.exe from: ftp://ftp.ulyssis.org/games/et/download/win/WolfET.exe
2) Run this file and install ET
3) Download patch 2.60: ftp://ftp.ulyssis.org/games/et/download/win/ET_Patch_2_60.exe
4) Install this patch
5) Download the latest patch (2.60b): ftp://ftp.ulyssis.org/games/et/download/win/et2.60bwin32.zip
6) Install this patch (unzip it, you will see a directory win32 with 2 executables, overwrite the existing executables in the main ET dir.)
5) Download the extra maps and etpro from: ftp://ftp.ulyssis.org/games/et/download/common/maps-etpro.zip
6) Unzip this file in your main et directory, it will at the latest (3.2.5) etpro and the maps used on Ulyssis.