My logitech quickcam E1000 dosent work on windows live messenger

Test it here to ensure your software is not at fault
Click 'Allow' in top window and see if your webcam broadcasts in the left hand window
http://www.testmycam.com/
All working ?
Open WLM
Click ( > ) Open Menu > Tools > Audio and Video setup - set default mic and test > Next - set webcam as default and trim using 'Settings' > Finish