Zonealarm / PC-Cillin conflicting

I'm trying to install ZoneAlarm firewall but the program installer detects that Pc-cillin is installed on my computer. I have removed pc-cillin well over a year ago from my computer and removed any traces I could find. Is there a solution to this little problem? Thanks

what version of pc-cillin is it?

Courtesy of winantivirus Workaround Procedures to be followed if your attempt of removing PC-cillin 2002 through Add/Remove Programs is unsuccessful: Procedure 1: Unload PC-cillin 2002 application manually Follow the steps given below to remove PC-cillin 2002 manually from your system: 1. Right-click the system tray icon of PC-cillin 2002 on your Windows Desktop to access the context menu of the application. 2. Click Exit to unload the application. 3. When you receive a prompt to stop real-time scanning, click Yes. Procedure 2: Remove all PC-cillin 2002 registry entries To delete the registry entries of PC-cillin 2002 from your system, follow the steps given below: NOTE: It is strongly recommended that a backup of the system registry is taken before you attempt any modifications. This is to prevent situations when incorrect changes can result in permanent loss of data or file corruption. Extreme caution should be exercised while modifying the specified keys. Please refer the following article to know more about taking a backup of your registry: How-To: Take a back of entire system registry of Windows Follow the steps given below to remove all registry entries associated with PC-cillin 2002: 1. Follow the path Start -> Run. 2. Type regedit in the Open field. 3. The Registry Editor window opens. 4. Navigate to the following registry entries: a.HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro Delete all entries under this key. b.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Delete the entries: i) PCCClient.exe ii) PCCGuide.exe iii) Pop3trap.exe c.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellExtensions\Approved Delete the entries: i) 48F45200-91E6-11CE-8A4F-0080C81A28D4 ii) 771A9DA0-731A-11CE-993C-00AA004ADB6C d.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall Delete the entry: i) C90F3E44-3BF6-11DA-A110-00500405613A e.HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services Delete the entries: i) PCC_PFW ii) PCCPFW iii) Tmfilter iv) Tmntsrv v) Tmpreflt vi) Vsapint f.HKEY_CLASSES_ROOT\CLSID Delete the entries: i) 48F45200-91E6-11CE-8A4F-0080C81A28D4 ii) 771A9DA0-731A-11CE-993C-00AA004ADB6C g.HKEY_CLASSES_ROOT\Installer\Products Delete the entry: i) 44E3F09C6FB34D111A010005405016A3 Procedure 3: Removing all PC-cillin 2002 folders Follow the steps discussed below to remove all the program related folders from your system: 1. Open Windows Explorer either by pressing [Windows]+ E keys or by following the path: Start-> Programs -> Accessories -> Windows Explorer. 2. Navigate through the explorer and delete the following folder on your system: C:\Program Files\Trend Micro ---------otherwise do a google search 4>>> remove pc-cillin

Thanks for the help. It was pc-cillin 2005 (suite) that was installed on my computer. I think that the problem solved itself on its own. Doesn't detect Pc-cillin anymore but finds that I have Sygate firewall installed and ask to remove it before I can install zonealarm. Problem solved.