Dell Inspiron 1100 - Manual (Page 73)

Setting Up a Home and Office Network 73
4 From the Data encryption drop-down menu, select your data
encryption type (as provided by the network administrator).
5 If your wireless network requires a key, enter it in the Network key
field.
NOTE: Your computer
may take up to a minute
to attach to the network.
6 Click OK.
Your network setup is complete.
Connecting to a Network With Wired Equivalent Protocol (WEP) Security
Requirements
1 In the Preferred networks section, click the name of your wireless
network.