How do I disable smilies in text by default?

[Snowhog]

vBulletin 4.2.2

Where do I change the setting for "Disable smilies in text" which is unchecked by default when creating/replying to a post? (Additional Options | Miscellaneous Options I'd prefer that it was enabled by default.

When you start or reply, scroll down and there are three Additional Options:

Show your signature
If enabled, your signature will be displayed below the message.

Automatically parse links in text
Will turn www.example.com into http://www.example.com.

Disable smilies in text
If selected, will not be replaced with

The first two are checked (enabled) by default. The third, 'Disable smilies in text' is unchecked by default. This is what I want to change. The Posting Phrases Containing 'Disable smilies in text' is disable_smilies_in_text. The template this phrase is in is newpost_disablesmiliesoption:

<li>
<label for="cb_disablesmilies"><input type="checkbox" name="disablesmilies" value="1" id="cb_disablesmilies" {vb:raw checked.disablesmilies} tabindex="1" /> {vb:rawphrase disable_smilies_in_text}</label><p class="description">{vb:rawphrase disable_smilies_in_text_explain}</p>
</li>

I'd assume that value="1" needs to be changed, and I tried that (to "0"), but it didn't have any effect. When I looked at the two other options, both contained the same value="1" as does this option, and those two are checked by default. The code to set this has to be somewhere.