Use a scheduled task to run a batch file. It will run in non-interactive mode (won't display a window) since you aren't entering a password - but should be able to launch an ssh daemon or something similar that give you a command prompt.
The syntax at the command line is:
schtasks.exe /create /tn <name> /tr test.bat /sc minute /mo 1 /np /rl highest /ru system
That will create a scheduled job running test.bat (which you'd create somewhere in your path, like the windows directory) as SYSTEM that runs every minute. "schtasks.exe /create /?" will give you the full syntax, including options to only run it on start or logon. Running every minute though lets you edit your batch file several times to run multiple commands.
As long as you still have editing permissions to test.bat, you can make it run whatever commands you want.