Norton Internet Security 2009 Questions.

ok…asking some questions…u might think i am stupid…i know…this questions are …nvm…but i wanted to make sure…ok ?

ok, i went to play with norton settings…under computer settings i found something called …found scan exclusion…i opened it…it says system/volume…something like tat…i think tats default…then i think…i want my pc perfectly great…no exclusion…so i deleted it…will there be a problem if i do it or is it ok ?

next i went to internet settings intrusion exclusion…exclusion means exclude it right ? everything should not be ticked…but when i  open it…everything is tick ! that means…argh…is that default ?

next went to advanced options in the internet settings…advanced event monitoring was off…how do i on it…i cant click it to make it on…it seem that without it on…i am vulnerable to lots of viruses cause under it …it have keylogger monitoring…code injection monitoring…is it default its on…

and last thing…is it advisable to check ( remove infected files immediately ) ? i ticked it.