Just use AutoHotkey to simulate it for you.
here's the scrip I use to do it (my 'show items' key is set to Capslock, you can change that to whatever you want of course):
toggle=0
*CapsLock::
toggle:=!toggle
If Toggle
Send {CapsLock up}
Else
Send {CapsLock down}
Return
Nice template, for those who are not familiar with Autohotkey. Here is an advanced version.
It uses orignal control so you can still use Alt key for sneak-peak. More over it also use caps-lock control light to show if Alt is pressed or not.
~*CapsLock::
if ( GetKeyState("CapsLock", "T") )
Send {LAlt down}}
else
Send {LAlt up}
return
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1. Download Autohotkey
2. Open Notepad.exe
3. Copy&paste the script
4. Save as OriginalSin.ahk <<<- replace txt extension
5. double clic on the file
6. in the right corner of the screen, next to watch you'll a green icon --> it works
7. press CapsLock & enjoy :-]