How to lock my network?

[InVinCiBLe]

Okay, here is my problem:

I have a wireless network and I just want to know how to lock or password it so that my neighbors or some random stranger who drives up to my house cannot steal my internet.

THX

[HostMaster]

Enable encryption. If you have an access point: Make up a key, configure your wireless access point with it using the software that came with it, and it's USB port. Some can be configured over the network. Just read the directions that came with it. Basically you need to configure your access point to use encryption and make up a key for it to use, then on every wireless adapter you need to configure encryption using the same key.

[InVinCiBLe]

Thanks HM.