Should I use WPA security?

I'm currently using WEP 128bit security, which I've heard is hackable. In deciding to use WPA Personal for my AE, I need to know:
1. Will it slow down my network?
2. Will it be compatible with my old iBook (using first generation AirPort card) and Windows XP computer?
thanks,
Eric

Apple stress that "WPA is a very secure encryption method that is now preferred for computers that can use it. WEP is an older encryption method that is less secure, but it is useful if your network has systems that are not WPA capable. "
I use WPA on my 4 year old PowerBook and my iMac with no difficulties. However, I would not be able to use WPA2 with the original Airport card in my PB. So, yes. WPA is compatible with Airport original cards without slowing down the network.

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    cactus wrote:
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