[Tristan Lall]

1. This isn't a Borland Delphi programming forum. It belongs to the Chief Delphi Robotics Team, competitors in the FIRST Robotics Competition
2. That's a Windows shell issue; you can create the appropriate keys in the registry using either regedit (at install-time) or Delphi itself at run-time (see Delphi help files for registry editing routines--they're pretty straightforward); look in HKCR for similar examples
3. This site seems to be what you want: http://www.codeproject.com/w2k/extendingshell.asp
4. If all else fails, try this: http://www.google.ca/search?hl=en&rls=GGLD%2CGGLD%3A2003-35%2CGGLD%3Aen&q=windows+explorer+context+menu&met a=