FINALLY figured this out. It WAS turned off in the BIOS. Problem is, I don't remember doing it! I did upgrade the BIOS, not sure if that would change it.
(Someone please insert the hand-to-the-head emoticon several times here...don't see it on the list)
Never dealt with a wireless computer before. This was also a multi-day project, where I stopped & started many times. I was following an online guide for a new installation of XP and the author recommended turning off wireless via the device manager, before connecting to the internet and retrieving all the updates/patches via a WIRED connection. When I followed his commands though, there was nothing there. During many reboots, I went through the BIOS and Dell has a few 'switches' there that enables/disables it.
What confused me, particularly as a HW guy, is doing so will prevent the OS from recognizing the wireless card, even though it IS there, IS receiving power, and IS hooked up to the buss. I thought it would still show up, just show up 'disabled'. Instead it turns into a 'black hole'. Further, I didn't realize that XP was still so tied to the BIOS? (More hand-to-the-head).
This Dell doesn't have a switch, but uses Fn+F3 or F4 to toggle the radio on/off. I also learned that this action will survive reboot.
Lo & behold, the device appeared on reboot. I reinstalled the Intel driver from Dells site, rebooted again, ran the HW test, and it recognized the card. Finally!
I later found out, according to Dell, some hardware may not function IF the drivers are installed in the wrong order! I thought this was the problem. So I went through, ripped them all out, and started over 'in the correct order'. That didn't work either. At that point, I decided to VERIFY & TEST all my assumptions...that's when I discovered it WAS off. Geesh. . .
Their site really is a pain: I signed up for an account to post a Q on their user forum, only to be told that I needed to create another username for an on-line account in order to join a forum???? Then it directed me to a marketing area, where it wanted to send me a bunch of junk! So that door was closed.
Further digging revealed that I could obtain a set of OEM install disks if I filled out an on-line form. When the neighbor did this, it wouldn't allow her to 'complete' without typing which PROVINCE we lived in???? We used a USA zip code: There is NO province! So we chose North West Territory! Knowing Dell, they'll probably ignore the Tx address and send it North!
Everything does work now. I ran CCleaner, defrag'd the HD and made an 'origin' image with all updates, patches, & duct-tape installed. Lesson learned . . . .