This is super easy. First make sure you users can telnet into the router.
# line vty 0 4
# password cisco
# login
By default, when a user telnets in, they will see the > prompt and it will be in “priviledge level 1″ mode with limited commands.
If you want to add commands to user mode [...]

Here is a fast an easy way to set NANO (for newbs) as your cronttab editor. First you have to make sure you have nano installed.
Then type in:
# EDITOR=nano export EDITOR
Now you can use # crontab -e and it will launch in nano for editing.
Cheers!

Microsoft Windows 2000 and Microsoft Windows Server 2003 include a Simple Mail Transfer Protocol (SMTP) service. The SMTP service can be used as a relay host. By default, this SMTP service advertises 8-bit Multipurpose Internet Mail Extensions, also known as 8BITMIME, and lets 8-bit MIME messages be relayed. Some products cannot handle 8-bit MIME messages. [...]