Oldfiles

I have a old Eset NOD32 Antivirus program that i cant get uninstallation. when i go into add/remove files i can only edit the file. Info in file: Name Publiceret by date of installation Size Version Eset NOB32 Antivirus ESET, spol. s r. o. 09-02-2012 70,9 MB 5.1.9.12 Need to remove it before i can installation another antivirus program.