Currently (April 3, 2010), support does not exist in the Linux kernel (2.6.33.2) for the camera that is in the lid of the Lenovo T510. This device has USB id 17ef:480f. It was pointed out on the Linux-UVC development forum that you can modify the uvc_driver.c file in the kernel to get the camera to sort of work. The result of that hack is that still pictures work, but video still doesn't work. Here is a command to capture a still photo using the camera: 
mplayer -tv driver=v4l2:outfmt=yuy2 -frames 3 -vo jpeg tv://
For that to work, you have to have the modified UVC driver running. It writes 3 JPEG files to the current directory. The first two are garbage. The third is the photo.

Update (April 6, 2010): I got the Lenovo T510 camera to work in video mode with the 2.6.33.2 kernel. I added this to uvc_driver.c: 

/* Hack for Lenovo Thinkpad T510 */
 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO,
   .idVendor  = 0x17ef,
   .idProduct = 0x480f,
   .bInterfaceClass      = USB_CLASS_VIDEO,
   .bInterfaceSubClass   = 1,
   .bInterfaceProtocol   = 0,
   .driver_info          = 0 },