Dell :: Getting Connection With Broadcom BCM43222 Dual Band N Wireless Card In D600n?

My wifes Dell D600n with with Intel 2200BG wireless G  card was Extremely difficult to get access to internet at first @ 54Mbps, but achieved it after 3 weeks of trying, after I had replaced motherboard, to fix battery charging issue.

The current problem, that i cannot seem to surmount is: I replaced the wireless card with a newer Broadcom BCM43222, Dual band N wireless card, that should be capable of connecting at almost 6 times the speed of the older G card. Unfortunately, the new card seems unable to connect at all. 

 ADDITIONAL INFORMATION:   The wireless switch via keyboard Fn & F2, has been on the entire time.   I've tried a couple of different drivers, to no avail. Ive uninstalled/ reinstalled both the card and drivers several times, still no connection. The device manager reports the card is off, at all times,  and i cannot find any way to alter this, but, despite the fact that this sounds like it could definitely cause  no connection,  this is unlikely to be  the reason, because it has reported that the wireless card is off at all times since the new Motherboard was installed, and the Wireless G card worked perfectly for the past 2 months, and still does, while the device manager was all the while reporting it was off. 

Also the wired  broadband connection, via cat 5, had  never worked after changing MOBO, Nor did the Dial up modem, til  both modem and Ethernet came to life, last night after reinstalling drivers for both the modem and Ethernet. unfortunately doing the same thing for wireless had no effect.  All this time the Intel wireless G card has, and still  does work perfectly every time i remove the  Broadcom Wireless N card and plug the G card back in.   Until lastnight, The device manager reported the wireless card had no driver installed. now it recognizes the driver is installed but still cannot connect wirelessly One wireless card driver I tried was called:  BROADCOM_ABGN_DD-WRT.zip.  I lost track of the name of the other driver that i've been trying. Someone on another forum said after installing BROADCOM_ABGN... That one must go to device manager advanced properties and select US from choices of US, Japan, or Germany, To get this driver to work. I've tried this too. Again, No improvement.

Ive built my own computers  for the past 30 years, and repair them all the time,  for hardware problems, but I fear software is not my forte.  My son, who is better at software.  Usually, together, we  can solve any mechanical electronic or software malfunction, but we're both stumped by this one.  Admittedly, we all sometimes overlook a simple solution while seeking a very difficult one. Whenever I face a difficult malfunction like this, I think of when as a 5 year old I was privileged to accompany my Engineer big brother to a local Airport to repair what i would later learn was a Automatic Direction Finder System,  needed before flight. As I sat beside my  on the tarmac, watching him sweat bullets trying to effect a quick fix, I noticed something that looked out of place to me, and started chanting his name, Ronnie, Ronnie, Ronnie... ad infinitum, as kids are like to do, til in desperation he finally dropped his screwdriver withwhich he aws about to dismantle the entire mechanism, and fairly yelled what?, to which I asked timidly, Ronnie are all those lightbulb things (electron tubes) supposed to be lit. he said of course!, and continued working, ignoring me for another hour. Finally when he stopped to scratch his head, I said "If they're all supposed to be lit why is one of  them  not lit? he insisted they all were, but  was adamant that they weren't. when he asked which one, and  i pointed to it.   He tested it verifying the filament was, indeed, open, and demanded to know why id watched for 4 hours and hadn't said that before.