Dell Latitude CSx wireless connection not working: help please!

My former company computer, a Dell Latitude CSx, has been refurbished with Windows XP O/S, etc. and the technician did away with all the old partitions on the hard drive.  The laptop has an infrared port, an SMC IrCC - Fast Infrared Port on the Intel 82371AB/EB PCI to ISA bridge (controller).  When this was my work computer I used to connect to the internet at home all the time through our Linksys wireless router which was connected to our cable modem.  (I've since gotten a newer Linksys router, which is working fine.)

 

The problem is that the Latitude does not recognize the wireless network at all.  I've checked the infrared port on the control panel and gone through the related screens and it says that it is working properly.  However, even though the box for "...indicate on taskbar when wireless network is detected..." is checked, nothing related to the infrared port or a wireless network appears on the taskbar.  I can't even seem to begin to initiate a connection or diagnose why nothing seems to be functioning.

 

Any advice would be greatly appreciated.

 

Happy Holidays everyone!!!!