[Nat Turner]

first thing... stop using WEP...Move to WPA2 and place your PC's behind hardware firewalls and/or hubs with NAT. Also using software like Zone Alarm as a backup will help.

[steve-b]

Also, you have to use decent passwords. It's actually not terribly difficult to construct and remember a strong password using a mnemonic system -- example:

Rules: Extract the first letter (preserving case), append the number of letters in that word, keep all punctuation.

Memorized Phrase: Who is John Galt?
Password: W3i2J4G4?

Memorized Phrase: Quoth the raven, "Nevermore!"
Password: Q5t3r5,"N9!"