Or you can use DayZlauncher which I've found is much more reliable when launching DayZ correctly, downloading mods and grabbing the latest server lists. Visit: DayZlauncher.com.
Server Batch file
Use this to join the server from your desktop. Ensure the paths to the exe files are correct. You must have Epoch 1.0.5.1 and @DayZ_Namalsk 0.75(from DayZcommander/launcher).
Or paste this code into a text document, save-as .bat. Run the file. Code:
::Author: Snow [AGS]
@echo off
echo ===============================
echo FINALdayZ Server Join Batch
echo --------------------------------
echo Author: Snow [AGS]
echo ===============================
echo JOINING SERVER IN .....
timeout 3
::===============================================================================================================================================
::Configuration| Edit these to the proper file paths ==============================================================================================================================================
::---> ===============================================================================================================================================
:: YOUR Arma 2 Operation Arrowhead Directory
set arma2oapath=C:\Program Files (x86)\Steam\steamapps\common\Arma 2 Operation Arrowhead
:: YOUR Arma 2 Directory
set arma2path=C:\Program Files (x86)\Steam\steamapps\common\Arma 2
:: Server IP
set IP=5.135.138.65
:: Server Port
set PORT=2342
:: Required Mods
set MODS=@DayZ_Epoch;@DayZ_Namalsk;
::---> ===============================================================================================================================================
::===============================================================================================================================================
:: DO NOT EDIT ANYTHING BELLOW THIS LINE OR YOU WILL BREAK THIS FILE ==============================================================================================================================================
::===============================================================================================================================================
start "" "%arma2oapath%\ArmA2OA_BE.exe" 0 0 -skipintro -mod=%MODS% -noSplash -noFilePatching -world=empty -connect=%IP% -port=%PORT% "-mod=%arma2path%;expansion;"
@exit