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Good advice from Bendsley, apart from the comment about WPA weakening signal strength. Signal strength is only affected by the radio and the local environment. A software setting does not affect the RF. WPA can have a CPU impact, and in theory this could manifest itself in lost connectivity in some unusual circumstances, but I've never seen it. The addition of the security overhead to the packets doesn't affect the underlying RF signal. That's like saying software physically affects your computer hardware.
If you want specific details on WPA or wireless in general just ask some more questions. I'll be happy to help.
BTW, selecting WPA is highly recommended. It secures your WLAN and mitigates all known attacks. Of course, if you do find it affects your signal quality, then you could always go with static WEP. Much much less secure, but an option none the less.
I can post a step by step guide on how to secure your WLAN if you want.
Finally, the recommendations on Cisco or Linksys kit are right on. Both excellent companies. Linksys is now a wholly owned subsidiary of Cisco by the way...
Mr Mephisto
Mr Mephisto
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