I've heard great things about TDS3. My only concerns are, that since I'm new to the whole AT idea, that it will be to hard to set up properly (and we know if security tools aren't set up properly they do little good) and the resource hit that everyone talks about. The resources is the biggest concern as I'm running Windows 2000 with 128 MB RAM on a PII 400 MHz with NAV and ZA free running all the time. Opinions? Thanks.