[Elven]

Упс. Строчку пропустил.

Код:

@echo off
SETLOCAL ENABLEDELAYEDEXPANSION
for /F "delims=" %%i in (1.txt) do (
  for /F "tokens=1-3 delims=_" %%A in ("%%i") do (
    set IP=%%A
    set LOGIN=%%B
    set PASS=%%C
cmdkey /generic:TERMSRV/!IP! /user:!LOGIN! /pass:!PASS!
mstsc.exe /v !IP!
))