sorry to hear that your webcam is still not working;
there is an opinion that UVC webcams work out of the box now:http://linux-uvc.berlios.de/#devices
this is a list: Plan B may be you just have to invest in a new webcam: (or a second-hand from a online site?)
even if said to work out of the box, if buying from shop, surely best to try to plug into your distro before purchase;
the gspca drivers were built into the 2.6.27 kernel but many seem to paradoxically report that webcams that .. worked in older versions of distros, no longer work ...
........ some have suggesting installing the latest gspca drivers (for seemingly gspca webcams) http://linuxtv.org/hg/v4l-dvb
but again, that is not a panacea