Don't run more that one anti-virus program at once otherwise they'll conflict with each other. Delete Norton, it's a waste of time, go with one of the free programs. Anti-virus programs don't pick up spyware very well so you will need to install Spybot as well.
"The blood-dimmed tide is loosed, and everywhere
The ceremony of innocence is drowned;" - William Butler Yeats
B9 5E 43 72 1F D8 F5 1E 1A 9C 7E AB 04 20 E9 DC - This is my 128-bit integer, don't get any ideas about stealing it.