vb.net - Encrypting the Connection String values in App.Config file -

so have code in app.config

  <appsettings>     <add key="dtsrc" value="fmdbms01"/>     <add key="initcat" value="training"/>     <add key="userid" value="mysa"/>     <add key="password" value="mypassword"/>     <add key="clientsettingsprovider.serviceuri" value=""/>  </appsettings> 

when found interesting article here encrypts sa username , password, tried using it. however, works same format illustrated in link, wish encrypt data is, tried using decrypt appsettings

%windir%\microsoft.net\framework\v2.0.50727\aspnet_regiis -pef "appsettings" "c:\users\mypcname\documents\visual studio 2010\projects\project\project\" 

where

"c:\users\mypcname\documents\visual studio 2010\projects\project\project\" 

is file location of web.config, error states there illegal characters in path

then used this

%windir%\microsoft.net\framework\v2.0.50727\aspnet_regiis -pef "appsettings" "c:\users\jsumgo\documents\visual studio 2010\projects\etrack\etrack\web.config" 

then error states configuration physical path cannot opened.

i tried changing attributes connectionstrings still no avail, doing wrong? or possible encrypt type of format?

i renamed app.config web.config, because that's instruction says.