WPA2 is superior as it doesn't suffer from the recently discovered flaw with WPA that allows limited cracking, though it's not a method to actually allow someone to connect. I had to surf using an unsecured network server for the past months.
I just installed a new Linksys ADSL modem/router at home.
On installation, my sons (Vista) machine connected instantly and is running like the clappers. Sly Even if this was working before (on two machines simultaneously?
Is the network setup for just auto IP configuration. Oh and make sure that the mac address of the wireless card on the xp machine has not been excluded in a mac address filter in the router.
Edit: since you have just reformatted the xp machine.
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Since the session is currently running (and now, a question – by modem or by the Vista machine? Wireless Network Connection (this is the one trying to validate identity) 1392 Connection (net Adapter) – Connected Thats on the XP machine that has just been reformatted. Open a command prompt and type ipconfig /all Copy and paste the result here. Next enable the security type and settings that you are going to use.
) it can't be created a second time, ISPs don't support that. There should be only "Local Area Connection" there (and/or possibly "Wireless Network Connection"). (copy in a command prompt, just highlight the text with a mouse drag and press enter). Did you run the networking wizard once you reformated and reinstalled the OS. After all of this is done then connect using the wireless connection.
However, my XP machine has ben sitting on.."Validating identity" for ages. possible but strange) it was weird, insecure (no NAT firewalling) and unnecessarily complicated. Yeah I think we need to figure out what's happening really :) Your computer should not do anything to connect – there should not be a "validating identity" screen, no logging in to a network, or anything like that.
Let your router do pppoe and routing, it's really designed for that. It seems that currently, your computer is trying to create a pppoe session (which involves logging in, validating identity etc). Change the wireless settings to create a new wireless ssid that you have not used before.
When setting up WPA you will see the option for either a radius server (Enterprise, and you see this in the corporate environment) or a place to enter a passphrase (Pre Shared Key, PSK).