Uninstalling problems

I've been trying for quite some time now, to uninstall Norton Internet Security 2006, and other related programs, by trying to use the Norton Removal Tool. I wanted to uninstall it because of another antivirus program having been put on here, & for some reason, Norton became unresponsive, but still had it's firewall up. (preventing me from using a particular program)

 

When starting the removal program, it gets to saying that I have to uninstall Norton Corporate Edition 7 or earlier, as seen here

 

Screenshot1

 

But when I got to the add/remove programs, Norton Corporate Edition isnt listed

 

Screenshot2

 

I tried to reinstall Norton, but the installer also said I had to get rid of it, (the corporate edition) but this time, it brought me to the add/remove programs and listed the corporate edition above Norton Internet Security 2006. I cant provide a screenshot for this, because the installer program now tells me that another installer is currently running, and I have to wait for it to finish. (I have no idea what installer it's referring to)

 

When I tried uninstalling the Corporate Edition, it stalled and never worked, and I cant seem to find any sort of uninstaller for it.

 

I'm also pretty sure that having 2 antivirus programs on one computer can cause some problems. I'm just not sure how to go about fixing those said problems.