Annoying message from Mcafee Personal Firewall Plus

[surfdoc]

I got a copy of McAfee persomal firewall plus when I purchased my Dell and now my subscription has run out. I keep getting a pop up in the right lower corner of my screen reminding me to renew and have to constantly check "keep doing what I was doing". So my question is: Do I need this part of the software that they want 60 bucks for? If not, how do I get this message to stop coming up several times daily?