Windows 7 - Disabling language switch hotkey "CTRL+Space"?

Hello all,
I posted this in Microsoft Answers, but I'm not convinced the "Support Engineers" there all know what they are talking about...

The story: My university has their computers set up with multiple input languages, none of which I use. Moreover, NetBeans (which I use frequently) uses the CTRL+Space shortcut for code completion, so I'd like to be able to use it without switching my keyboard to Chinese.

I've made a script that will customize the computer I'm using (because so many settings they use are messed up), so I'm looking for a way to do this in the registry or the command line, rather than the control panel. To make things more interesting, these computers have Deep Freeze on them, so any changes made to them do not stick around after rebooting the machine.

Short version:
Does anyone know of a way to disable the CTRL+Space hotkey (or muti-language input in general) via command line or the registry that does not require a reboot?

Thanks in advance!

Open Control Panel, then go to Region and Language. Click on the tab Keyboards and Languages. Click on the Change keyboards button, and go to the Advanced Key Settings. That's where the shortcuts for switching langauges are defined.

Ivo, thanks for the response.
However, I was looking for a way to do this via command line or the registry (without rebooting), if possible.

Thanks!

Sorry, reading comprehension fail.
What I would do is run Process Monitor, change the setting in the control panel, and see what registry keys are accessed.