In addition to my previous post Hiding and Showing Recyle Bin
This is how you create hide registry key and show registry key for Recycle Bin thingy.

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For hiding part, just copy this and paste to your notepad and save it as Hide Recycle Bin.reg
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Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum]
;Hide Recycle Bin on Desktop
"{645FF040-5081-101B-9F08-00AA002F954E}"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\NonEnum]
;Hide Recycle Bin on Desktop
"{645FF040-5081-101B-9F08-00AA002F954E}"=dword:00000001

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For show part, copy this one, paste to notepad and save it as Show Recycle Bin.reg
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Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\NonEnum]
;Show Recycle Bin on Desktop
"{645FF040-5081-101B-9F08-00AA002F954E}"=-

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\NonEnum]
;Show Recycle Bin on Desktop
"{645FF040-5081-101B-9F08-00AA002F954E}"=-

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copy both files to your C:\Windows. ^^