This is a new mail authentication and encryption program - it seems nice. Anyone else care to try it out?
https://www.ciphirebeta.com/
Currently Windows XP or Windows 2000 (Service Pack 3 or higher) are required. I dont have Service Pack 3 and I'm not really interesting in installing it, will this program work without it? Cipher Mail looks like something I could use, maybe it will help stop those 2000 emails per day, :/.
Presumably not. You should probably install SP4, though, if you're on Win2k. It's good to be up to date.
WIll installing Service Pack 4 "ruin" anything else that is already on my computer?
Is it the exact same thing as using GPG/PGP, but with a centralized key server for the users of the software?
Windows 2000 below service pack 4 is vulnerable to a lot of different attacks, although so is win2k, so it hardly makes a difference. I recommend you update to windows xp, but, if that's not possible, to sp4. I can't guarentee if anything will break, though I never had a problem with win2k stuff.
It's doubtful SP4 would break anything, and the security and feature updates it provides are invaluable. You should upgrade ASAP.