As a 1USA client, we want to help you keep your computer network secure and problem-free. The below links are tutorials that you may find useful.
Businesses will want to read some of the documents on SecurityHaven to get an understanding of some of the threats to your network.http://www.securityhaven.com/downloads/
Here's an article that says to not use WEP protocol on your wireless network, but instead to use one of the 802.1x protocols, like 802.11 The x in a specification means wildcard; and to replace the x with the "version of the day". An example of reading the x in specifications: Windows 9x means Windows 95, 98.