Having a Norton problem

Wheven I click 'options' on Norton i get this message "Norton Antivirus has encountered an enternal program error, please uninstall & re-install ". So i do so and during the live update process of re-installing it this message comes up
"Windows XP 5.1.2600 Service Pack 2

NAVNT 11.0.2

LiveUpdate was not able to complete this update.

Please contact Technical Support and provide all information displayed on this screen.
For contact information, go to Help->Technical Support from your Symantec product.

The files below could not be updated by LiveUpdate:
-----------------------------------
File: C:\PROGRA~1\NORTON~1\NAVOpts.dl^
820352 Bytes 8/30/2004 14:34:30 v11.0.2.4."

So now i cannot do a full live update, nor tweak any settings. Can anyplease help. Thanks