I'm trying to add a 3rd to a powerlineAV network adapter. First computer is connected to Linksys WRT54GX router w adapter #1. Second computer connected to adapter #2. Configuation utility does not reconized the mac adress of the # 3 adapter. All three blue indicator lights are lite. I'm running windows XP. Have spend over 2 hours trying to resolve w Linksys tech support. One person just told me the PLE200 only work in pairs. I don't think that correct because the manual states you can add up to 256 remote adapters to the local PC. Please help.