Firetrust Support Forums

I'm a new user. Thunderbird is my email program. I followed the instructions of adding .b9 at the end of the server name.
The program does nothing?

Which OS? What shows up in the hosts file?

Windows XP Pro.

Hosts:
# Begin B9
127.98.9.7 staff@immortalgunfighters.com.b9
127.98.9.4 domain@webmaster10.com.b9
127.98.9.1 sampson@sampson-sporttouring.com.b9
127.98.9.12 webmaster10@frontiernet.net.b9.b9
127.98.9.11 staff@longcoatsandlace.com.b9.b9
127.98.9.10 staff@immortalgunfighters.com.b9.b9
127.98.9.9 sampson@sampson-sporttouring.com.b9.b9
127.98.9.8 order@sampson-sporttouring.com.b9.b9
127.98.9.6 mcl@motorcyclelighting.com.b9.b9
127.98.9.5 domain@webmaster10.com.b9.b9
# End B9

New computer running Vista Business. Trying to get Mall Washer installed. I put the multi email addresses in B9 as it won't import addresses and I get message "can't write to hosts file". I moved the hosts file so it could write a new file. It wouldn't write a new file so now what do I do?