Hi,
Here is the latest RegSearch per your instructions.
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Windows Registry Editor Version 5.00
; Registry Search 2.0 by Bobbi Flekman © 2005
; Version: 2.0.6.0
; Results at 5/16/2011 6:26:14 AM for strings:
; '.pdx\pdxfiletype\shellnew'
; Strings excluded from search:
; (None)
; Search in:
; Registry Keys Registry Values Registry Data
; HKEY_LOCAL_MACHINE HKEY_USERS
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.pdx\PDXFileType\ShellNew]
[HKEY_USERS\S-1-5-21-2075307622-3171654227-2039206519-1006\Software\Microsoft\Windows\CurrentVersion\Applets\Regedit]
"LastKey"="My Computer\\HKEY_LOCAL_MACHINE\\SOFTWARE\\Classes\\.pdx\\PDXFileType\\ShellNew"
; End Of The Log...