Preamble: I've just stripped Windows XP Pro out of my trusty IBM ThinkPad T40 and installed Ubuntu 8.04 (the Hardy Heron). My total experience with Ubuntu/Linux is 2 hours. I'm still struggling with the basic concepts such as the Terminal/command line interface (which takes me back 30 years). And I'm very grateful to the Ubuntu community for providing me with this system, and free of charge to boot (excuse the unintended pun). If all goes well I should reach the stage where I can plough something back into the community rather than just asking for help.
The Problem (or Challenge, as we say in corporate-speak): the wireless on the ThinkPad no longer functions. It was working up to the point where I removed Windows XP. Running lspci in the Terminal reports the wireless as "02:02.0 Ethernet controller: Atheros Communications Inc. AR5212 802.11abg NIC (rev 01)". I've searched around in the Ubuntu world for hints as to the next step but hitherto with no success, partly because many of the postings contain acronyms and Linux concepts which are still unfamiliar to me (give me a little slack here; I'll soon be up to speed).
Request: can someone tell me what might be wrong here and how to correct it ?
Thanks in advance