You can totally set how many columns for Grid System by Customize at http://getbootstrap.com/customize/#grid-system
Sorry for incomplete comment, code had been cut out :S
Simply add the following MIME type declarations via IIS Manager (HTTP Headers tab of website properties):
.eot application/vnd.ms-fontobject
.ttf application/octet-stream
.svg image/svg+xml
.woff application/x-woff
If you do not have access to the IIS Manager, you can add these declarations in your Web.config file, in the <system.webServer> section.
<system.webServer>
<staticContent>
<mimeMap fileExtension=".eot" mimeType="application/vnd.ms-fontobject" />
<mimeMap fileExtension=".ttf" mimeType="application/octet-stream" />
<mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
<mimeMap fileExtension=".woff" mimeType="application/x-woff" />
</staticContent>
</system.webServer>
You'are welcome!