I don't know about you guys but some times I'm not supposed to be on WoW and I need a way to hide it if my parents walk in! I use Hide Window Hotkey.
You can download the program here:
Code:
http://dw.com.com/redir?edId=3&siteId=4&oId=3000-2346_4-10390575&ontId=2346_4&spi=037b4853cd7db9df03d91db81f488d47&lop=btn&tag=tdw_dlicon<ype=dl_dlnow&pid=10535733&mfgId=6270672&merId=6270672&destUrl=http%3A%2F%2Fwww.download.com%2F3001-2346_4-10535733.html%3Fspi%3D037b4853cd7db9df03d91db81f488d47
Once it's download, You'll need to register it if you wish to use it any more than 15 days. Since I've already registered mine, I can't open the window any more so I can't screenshot it, but Click "Help" and use these codes:
Code:
Name: www.serials.ws Serial: 4918252628
Now to set it up:
1) Click the button in the system tray.

2) Open the program you want to hide (I'm using paint) and click the check box on the left.

3) Click Options.

4) I use these settings to hide programs.

5) Click password. This is so if someone else tries to open the program from the tray, they have to put in a password.

6) Put in anything you like then press "OK".
7) Go to the Hotkey tab and use whatever hot keys you like. Press "OK."

Go to "Edit" and click "Change Title and Icon"

9) Use whatever Icon and Title you like.

10) Right click your system tray and go to "Properties".

11) At the bottom, click "Customize"

12) Pick Hide Window Hotkey and change the drop down box to "Always hide"

And you're done!
Now press your hotkey to hide whatever you want hidden.