People, due to the fact the Telco giant here will not supply DSL to my house but does to my sisters 300m away, we have decided to explore the world of wireless and share her DSL connection.

Anyway, having finally got a couple D-Link 520+ wireless cards (and who said they wouldn't work in Linux ) talking to each other across the house and I want to ensure the traffic between the two is secure before widening the connection across the neighbourhood -courtesy of a couple of old satellite dishes. (Probably overkill for 300m but hey, we got them so why not use them - still need to mod them but thats for another day - getting these machines secured is the current priority)

Mandrake (so does all nix I believe) uses a tool called iwconfig to configure the cards but for some reason this tool will not let me configure the encryption on the traffic (set keys) for these cards. It has only allowed me to get the card to basically "see" other.

I am very, very new to this so if anyone can point me in the right direction, web links, tips, advice, whatever - it would be greatly appreciated. I have done the Google thing - but I just need coaxing in the right direction so I really know what it is I am looking for.

Nothing really confidential will be flying across the airwaves but I dont want little "Wayne the Wardriver" dropping by a stealing bandwidth that we have to pay for if this is at all possible.

Thanks in advance,

PP