to view the alert options for the security center, do this:
open mcafee security center.
on the lower right pane, click configure.
then, on security center configuration, click on alerts, then, advanced.
after that, you'll see the alert options, and see if "alert me when a virus or security threat occurs" is checked.
to view the quarantined items:
open mcafee security center.
clicked the "advanced menu" on the lower left pane.
then, on the left side, look for "restore", click that.
after that, you'll see the list of items qurantined that you can delete if you want to..

happy