Try this batch file. You will need to create a plain text list (in notepad) of servers using a carraige return to seperate them. I.e.
>>List.txt<<
server1
server2
server3
etc.
You will also need to fill in the [service1],[service2] in the below code with the services you are needing to change. Most of this code just allows you to run the batch file and determine the username and password when you run it instead of having to modify the batch every time. If the services tend to change often, you may want to run an embedded "for" loop to help alleviate your need to modify the batch program. Let me know if you would like to see that coded out.
@echo off
:username
cls
echo.
echo Enter the UserName
set /p user={User}
cls
echo.
echo %user%
echo.
echo Is this correct?
set /p yn1={y/n}
if /i "%yn1%"=="y" goto password
goto username
:password
cls
echo.
echo Enter the password
set /p pass={Password}
cls
echo.
echo %pass%
echo.
echo Is this correct?
set /p yn2={y/n}
if /i %yn2%"=="y" goto services
goto password
:services
for /f "delims=" %%A in (List.txt) do (
sc %%A stop [service1]
sc %%A config [service1] obj=TeeCee DisplayName=%user% Password=%pass%
sc %%A start [service1]
sc %%A stop [service2]
sc %%A config [service2] obj=TeeCee DisplayName=%user% Password=%pass%
sc %%A start [service2]
...lather, rinse, repeat...
)