Basically, my XPS 1530M Webcam doesn't work in Windows XP.
I'm sure I'm not the first person who's migrated from the shipped OS (Vista) to XP on the M1530. That said, I've faithfully attempted to load the correct drivers, webcam manager, etc. from the dell support site, especially the XP compatible laptop-webcam driver (i.e. R165116). However, no matter how many times I try to reload this driver, when I open the webcam manager, I get the error message "Your webcam driver is not installed."