How do I add items to Windows Explorer New menu?

Question

How do I add items to Windows Explorer right-click context menu called New?

Answer 1

On Windows XP it appears they are registry entries. On my machine it's all listed under

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\ShellNew

Answer 2

Sample using ".sql" files.

1. Start -> Run
2. %userprofile%\Templates
3. Copy NewProc.sql
4. Edit the registry

[HKEY_CLASSES_ROOT.sql\ShellNew] Value Name = FileName Value Data = NewProc.sql

Seems kinda kludgy and to only support one new item per file type, so I'm on the lookout for a better answer.