7zip timestamp archive under context menu

Does anyone know how I can add a context menu item that would compress a folder and add a timestamp? So that I can right-click a folder and it would give me the option to create something like this: folder_20100528.zip

(I'm posting it here beca开发者_Go百科use I figure it's something that's done through a batch file/code)

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The batch script should be reasonably simple, so create it and throw it in C:\

On XP:

• Then open explorer and click the 'Tools' -> 'Folder Options' menu.
• Select the 'File Types' tab.
• Scroll down the extensions list until you find 'File Folder', and highlight it.
• Click the 'Advanced' Button
• This will open a new window, where you can create 'actions' (eg context menu items).
• Simply make a new one, call it what you want, and set up the parameters to send into the batch file.

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the batch script is what I was trying to figure out ; )

SET ZIPPATH="C:\Program Files\7-Zip\7z.exe"
SET TIMESTAMP=%date:~6,4%%date:~3,2%%date:~0,2%-%Time:~0,2%%Time:~3,2%
%ZIPPATH% a -tzip "YRH_%TIMESTAMP%" "YRH\*" 

for now I'm just using a .bat file that I dropped in the directory, I'll try to implement the rest later

thanks