Computer users help! Trying to get rid of useless files and remove useless program?

[wiiguy 3]

I was using Norton 360 when i got to the point were i HATE it (thats not the point of the question) so i decided to remove it but i want everything out even the left over files i want it all gone! ALL.. i got two problems=>


1.
so i went to search and typed norton, symantec, all that good stuff but everything so far so good , now theres one little stupid file i cant delete it its under symantec shared folder and it says as follows

Can not delete AlertEng.dll: Access is denied
make sure disk is not full or write protected and that they are not in use(which there not)

Anyways i hate that how do i delete that dumb disturbing file?

2.

Also in add or remove program files menu in windows xp theres a file cant get rid of its called "liveupdate notice"(symantec corp.)
it says as follows when i try to remove program

Your are attemptimg to uninstall a program that is required for other symantec products to run on your pc. you are unable to remove this program at this time.

*arghh help?