Hi, sorry I can't help more. This link might suggest that you need to use V4l2 and not v4l if you are using a 2.6 kernel.
If you search the following webpage for "microdia"
It indicates support is available, and directs you to the following site, though I can't find your make or model in there, it does mention v4l2:
I have seen a page suggesting that it may work under the SimplyMepis distribution, sorry lost the location