utilized py launcher with explicit 3.8-32 python version

Install_Caster_DNS-WSR.bat

@@ -1,10 +1,28 @@
+
 @echo off
+
+SetLocal EnableDelayedExpansion
+set python_version=3.8-32
 set currentpath=%~dp0
 echo Installation path: %currentpath%
+
+@REM execute python launcher for python directory
+FOR /F "tokens=1 USEBACKQ delims=" %%i IN (`py -%python_version% -c "import sys; print(sys.exec_prefix)"`) DO ( set python_path=%%i )
+
+@REM  whack a funny trailing character (newline?) from end
+set python_path=!python_path:~0,-1!
+
+set PATH=%python_path%;%python_path%/Scripts;%PATH%
+echo %PATH%
+
+echo Next line should clearly state python version:
+python --version
+
 echo Using this python/pip:
-python -m pip -V
+
+py -%python_version% -m pip install --upgrade pip
 
 echo Installing Caster Dependencies for DNS/WSR
-python -m pip install -r "%currentpath%requirements.txt"
+py -%python_version% -m pip install -r "%currentpath%requirements.txt"
 
-pause 1
+pause 1