and why would your service provider be giving you a wireless password?
Unless you are totally wireless and have no wired connection to your ISP but that does not seem to be the case with this company
Your wireless password should be determined by you and not your ISP and should be part of the setup/configuration of the wireless router.
Connect your Mac directly to the modem/router with a length of ethernet cable, launch Safari and browse to 184.108.40.206 and change your security settings.
Was this modem/router supplied by TalkTalk or was it one you purchased. Note that some routers do not work with that system.
DG834G - Version 3, Huawei HG520, Philips SNA5630NS, Belkin G Wireless
A few more details would help
I switched to a new broadband provider (talktalk UK) and am trying to connect to their broadband.
They say the "wireless security option" needs to be WEP 40/128-bit ASCII. The password they provide has 26 letters. The field of the mac where I shall enter the password only seems to allow 13.
Does anyone have a solution for this problem?