3Com Professional Handbook To enter a primary and secondary DNS:

Chapter 3: Reference page 47
Note: If you are not sure, try PPP; if that doesn’t work, ask your
Internet Service Provider or your System Administrator for the
correct connection type.
Defining Primary and Secondary DNS
The Domain Naming System (DNS) is a mechanism in the
Internet for translating the names of host computers into IP
addresses. When you enter a DNS number (or IP address), you
are identifying a specific server that handles the translation
services.
Each IP address has four sections, separated by periods. In the
Details dialog, you enter each section separately. Each section of
an IP address is made up of a number from 0 to 255; numbers are
the only allowable characters in this field.
Note: Ask your Internet Service Provider or your System
Administrator for the correct Primary or Secondary DNS IP
numbers.
Tip: Many systems do not require that you enter a DNS. If you
are not sure, leave the DNS field blank.
To enter a primary and secondary DNS:
1. Tap anywhere in the first section of the Primary DNS field,
which is to the left of the first period, to insert the cursor.
2. Use the stylus to write Graffiti character strokes (or the on-
screen keyboard) to enter the first section of the IP address.
Note that each section can only be a number from 0 to 255.
3. Tap anywhere in the second section of the Primary DNS field
to insert the cursor, then enter the second section of the IP
address.
4. Tap anywhere in the third section of the Primary DNS field to
insert the cursor, then enter the third section of the IP
address.