That particular tutorial is severely outdated.
Here's a general rule with LinuxMCE...
If you want things that just work, use hardware that works out of the box, Panasonic IP cameras and the like...
We do not have support for this device out of the box...but you may want to install the qc-usb-source package, and try to compile the drivers for your use. Others here may be able to help you better with this, as it is an involved process, and I do not have the time to type it all out at the moment.
Once the kernel driver is working (assuming it isn't already... run dmesg from a shell), you can set it up using the "Motion" page on the wiki...again, this is a manual process, because you're using a device that does not have a template made for it.
-Thom