Firewall problems

ok I downloaded a 15 day trial of Firewall X-treme.After the 15 days where up i could no longer use the program, so i go to delete the program.After the uninstalll was complete I go to get on the internet and it will not let me.wtf so i get really mad and do a system restore.after the system restore everything works fine. i dont want this program in my computer useing up my disk space.Has anyone had this problem before? can someone plz help me?

 

Well you might want to do a system restore back before you installed the program. that would most likely do the trick.