I have a Toshiba Satallite 135 laptop W/ Vista sp1. Amusing a Linksys wrt45g
with latest firmware. Router used in both lan and wireless mode. Problem.
Can establish a network with laptop using WEP secure mode, but when
attempting to establish connection in either WPA or WPA-2 using either AES or
TKIP no network is created.

HI
From the weakest to the strongest, Wireless security capacity is.
No Security
MAC______(Band Aid if nothing else is available).
WEP64____(Easy, to "Brake" by knowledgeable people).
WEP128___(A little Harder, but "Hackable" too).
WPA-PSK__(Very Hard to Brake ).
WPA-AES__(Not functionally Breakable)
WPA2____ (Not functionally Breakable).
Note 1: WPA-AES the the current entry level rendition of WPA2.
Note 2: If you use WinXP and did not updated it you would have to download
the WPA2 patch from Microsoft. http://support.microsoft.com/kb/893357
The documentation of your Wireless devices (Wireless Router, and Wireless
Computer's Card) should state the type of security that is available with
your Wireless hardware.
All devices MUST be set to the same security level using the same pass
phrase.
Therefore the security must be set according what ever is the best possible
of one of the Wireless devices.
I.e. even if most of your system might be capable to be configured to the
max. with WPA2, but one device is only capable to be configured to max . of
WEP, to whole system must be configured to WEP.
If you need more good security and one device (like a Wireless card that can
do WEP only) is holding better security for the whole Network, replace the
device with a better one.
Setting Wireless Security - http://www.ezlan.net/Wireless_Security.html
The Core differences between WEP, WPA, and WPA2 -
http://www.ezlan.net/wpa_wep.html
Jack (MVP-Networking).

"jpoffy" wrote in message
...
I have a Toshiba Satallite 135 laptop W/ Vista sp1. Amusing a Linksys
wrt45g
with latest firmware. Router used in both lan and wireless mode. Problem.
Can establish a network with laptop using WEP secure mode, but when
attempting to establish connection in either WPA or WPA-2 using either AES
or
TKIP no network is created.