The Crystal Eye webcam in new Acer laptops, my TravelMate 6292 included, works with the linux-uvc driver, as I noted before. To use it in GStreamer applications, you need to have the v4l2src component, which recently moved from the gstreamer-plugins-bad collection to gstreamer-plugins-good. In Fedora 7, you must have g-p-g version 0.10.6, which was just released to updates-testing (in a few days in updates, I would expect).

Update: With Fedora 9 or 10, you need nothing extra: the default installs of gstreamer-plugins-good and kernel already have everything built-in. Just set your default video input to Video for Linux 2 in gstreamer-properties.

If you don't want to build linux-uvc yourself (it's very easy), you may want to enable the drpixel yum repo that has it pre-built for Fedora kernels.

rpm -ivh http://download.tuxfamily.org/rpm/drpixel/fedora/7/i386/repodata/repoview/drpixel-release-0-1-2.html
yum --enablerepo=updates-testing --enablerepo=drpixel install gstreamer-plugins-good kmod-uvc

To test it, run:

gst-launch v4l2src queue-size=2 !  ffmpegcolorspace ! ximagesink