WEP key automatically.

Hi,

I have a wireless router that supports only WEP. Its said WEP is better that nothing. So i switched to WEP. Since then my clients are finding it difficult to enter WEP keys while connecting. I have seen the option on windows XP wireless properties that says "This key is provided me automatically". How can I configure so that the client get the WEP key automatically?

Thanks in advance.

No help.
Any links, resources, tutorials?