To add a Command Prompt: option on folder context menus (right-click file or folder), cut and paste the following code into commandline.reg file and run it.

REGEDIT4
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Directory\shell\DosHere]
@="Command &Prompt:"
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Directory\shell\DosHere\command]
@="C:\\WINDOWS\\cmd.exe /k cd \"%1\""
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Drive\shell\DosHere]
@="DOS &Prompt Here"
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Drive\shell\DosHere\command]
@="C:\\WINDOWS\\cmd.exe /k cd \"%1\""

BLANK LINE GOES HERE

See .REG files for background information on .REG files. If you don't want to directly edit the registry, download Command Prompt Here powertoy for Windows NT and follow the instructions.

This kind of install script is included in Windows 2000 Resource Kit. To install CMD Prompt Here, open the folder where the W2K Pro Resource Kit is installed, right-click Cmdhere.inf and choose Install.

The W2K version of the .reg file would be the same as the Windows NT version. You would need to change the path to cmd.exe to the W2K location, usually C:\WINNT\SYSTEM32. The w2k version is:

REGEDIT4
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Directory\shell\DosHere]
@="Command &Prompt:"
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Directory\shell\DosHere\command]
@="C:\\WINNT\\SYSTEM32\\cmd.exe /k cd \"%1\""
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Drive\shell\DosHere]
@="DOS &Prompt Here"
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Drive\shell\DosHere\command]
@="C:\\WINNT\\SYSTEM32\\cmd.exe /k cd \"%1\""

BLANK LINE GOES HERE

Win95 Powertoys also includes a Command Prompt Here tool which work for Windows NT or Windows 2000. To install, right-click Doshere.inf then choose Install.

The XP version of the .reg file would be the same as the Windows NT version. You would need to change the path to cmd.exe to the XP location, usually C:\WINDOWS\SYSTEM32. The xp version is:

REGEDIT4
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Directory\shell\DosHere]
@="Command &Prompt:"
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Directory\shell\DosHere\command]
@="C:\\windows\\SYSTEM32\\cmd.exe /k cd \"%1\""
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Drive\shell\DosHere]
@="DOS &Prompt Here"
BLANK LINE GOES HERE
[HKEY_CLASSES_ROOT\Drive\shell\DosHere\command]
@="C:\\windows\\SYSTEM32\\cmd.exe /k cd \"%1\""

BLANK LINE GOES HERE