After installing ZA Security Suite 7.1 then running the antivirus and antispyware modules, I got the following results:

Virus Name: not-a-virus:Monitor.Win32.SupremeSpy.a
Date Detected: 09 Nov 2007 22:25:00 +0300
Date Modified: 11 Dec 2007 16:29:56 +0300

Virus Name: not-a-virus:Monitor.Win32.KeyLogger.w
Date Detected: 01 Mar 2007 12:22:00 +0300
Date Modified: 01 Mar 2007 16:20:04 +0300

First, I don't understand the "not-a-virus" part. If SupremeSpy and KeyLogger aren't viruses (which seems unlikely), why are they listed?

Second, How could the Date Detected in both instances be earlier than the ZA install date?

On my Vista Home Premium system, I'm running:
ZoneAlarm Security Suite version:
TrueVector version:
Driver version:
Anti-virus engine version:3
Anti-virus signature DAT file version:20071224052000
Anti-spyware engine version:
Anti-spyware signature DAT file version:01.200712.3055
AntiSpam version:

Operating System:Windows Vista Home Premium
Software Version:7.1 (Vista)
Product Name:ZoneAlarm Internet Security Suite