|I am still confused.|
3 wires are needed for most rs-232c systems. Most times they didn't actually use a rj-45 it was a dec or other connector that had the clip on the side.
Slipp is a different deal also.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, Make an autorun.inf folder on all usb drives.