Windows admin Survival kit

C:\> FOR %f IN (dir c:\tmp\*.*) DO toto.exe %f param2

tracert.exe

C:\Windows\System32\drivers\etc\hosts

To change program that start when Windows starts

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
RunOnce
RunServices
RunServicesOnce

If what you are looking for is not there, you can check also: HKEY_CURRENT_USER
.