Facebook notification helppp!?

[Carly]

Okay so on Facebook, you know near the bottom right corner, there's a little sign where occasionally, a red box with a number in it will pop up, and it'll show you notifications such as so-and-so wrote on your wall, commented on this person's status as well, etc.?

Well I accidentally clicked the X once and disabled that feature, and I can't figure out how to bring it back.

Again, I'm not talking about getting email notifications, but notifications on that thing.

thx!
omg! peppyyauntie121 you are too too amazing, thank you so much! (:
i mean peppyauntie121

sorry for the typo

[peppyauntie121]

go to Inbox
click - Notification tab
check boxes - Show Notifications