As promised I am publishing script that will close Zune and start WPConnect automatically. I have placed this script on my desktop and I start it each time I connect my Windows Phone to computer. Please find script in next part of post.

@ECHO OFF
ECHO (c) Michal Jankowski 2012 http://www.jankowskimichal.pl

SET %errorlevel% = 0
SET /a counter = 0

taskkill /IM zune.exe
IF %errorlevel% NEQ 0 (
  GOTO End
)

ECHO Closing Zune...
PING 1.1.1.1 -n 1 -w 5000 >NUL

:ConnectToPhone

IF %PROCESSOR_ARCHITECTURE% == x86 (
  "%ProgramFiles%\Microsoft SDKs\Windows Phone\v7.1\Tools\WPConnect\x86\WPConnect.exe"
) ELSE "%ProgramFiles(x86)%\Microsoft SDKs\Windows Phone\v7.1\Tools\WPConnect\x64\WPConnect.exe"

IF %errorlevel% == 0 (
  GOTO End
) ELSE (

  IF %counter% GEQ 2 (
    ECHO WPConnect can not be started...
    GOTO End
  )

  ECHO Retrying in 5 seconds...
  PING 1.1.1.1 -n 1 -w 5000 > NUL
  SET /a counter=counter+1

  GOTO ConnectToPhone
)

:End

And whole in file: