Having 2 or more firewalls installed on a computer "may" cause conflicts, but I have never heard of one firewall preventing another from being turned on. Perhaps others can give more information on this.
But what messages do you get when you try to turn on Norton's firewall? What actually happens when you try?
Two more points;
Is your Windows XP firewall on as well? Either the pre-SP2 firewall, or if you have SP2 installed the newer SP2 firewall? SP2 is the important security upgrade for windows. If so, you should turn it off.
And, although you say you have turned off Sygate, it may be that it is still running in the background. Whenever you start up your computer the Sygate firewall should be one of the first programs to run in the background, even "before" Windows loads up. This is to give you maximum protection from hackers in that dangerous period when your connection to the internet, (broadband users), is established before Windows fully loads. Even if you don't have broadband, the Sygate background protection starts up.
When you disable a firewall from it's program in Windows, either from the system tray icon or elsewhere, this background protection is still running.
So, if it is Sygate that is preventing Norton's firewall from loading, (and again I say I have never heard of this), you may have to uninstall Sygate, completely before attempting to load up Norton's firewall.
If you did want to try that, you should not do so unless you are disconnected from the internet. If that doesn't work, I expect you can always re-install your Sygate progam.
I have an:
AMD K-6 2/300
PC CHIPS Motherboard
American Megatrends Bios V 1.47
160 Mb of SDRAM (PC 66)
120 Gb 8mb memory Seagate 7200 rpm Hard drive
Nvidia GeForce2 MX/MX 400 video card
SB512 Soundwave audio card
I downloaded the Norton's Internet Security, which my ISP provides me. During the download I had to have on my Sygate 5.6 firewall and used my Spyguard and Spyware Blaster, as usually do when on the internet.
I had to go through a registration process on line with the Norton's even though I had the Norton's CD my ISP supplied me.
While my Norton's Antivirus works well, my Norton's Internet Security does not(it will not activate the security firewall--even when I turn off my Sygate). Is there any reason for this to happen? Could it be that using the Sygate and the Spyware Blaster and Spyware Guard corrupted my Norton's Internet Security during Installation?
Does it require that I do a repeat install? everything worked well with the Norton's Live Update by the way....I am fully up to date with the updates.
Thanks for your help,