Problem with Network Adapter after reinstalling XP

I had to reinstall my XP. I installed using a "Reinstallation CD w/ SP 1a" from DELL, followed by applying the SP2 from microsoft website. Everything looked fine, expcept:

Now my NIC is not being detected--I don't see the LAN Connection anymore in my network connection. The Device Manager shows the following:
Modems
Conexant D480 MDC V.92 Modem
Network Adapters
1394 Net Adapter
Intel(R) PRO/Wireless LAN 2100 3A Mini PCI Adapter
? Other devices
? Ethernet Controller
? Multimedia Audio Controller
? Video Controller
? Video Controller (VGA Compatible)

(Note the ? before the entries).

I have tried the following:

1)Initially I did not see the Intel wireless; but I had remembered this device earlier, so I was able to find, download and install the approp driver. This device now runs but I am not seeing the wireless connection (even though the wireless modem shows authentication and connection), so the problem is on the X300 side.
2) Also it did have a
? PCI Modem
entry under ? Other devices. I was able to do some research and by trial and error found that it accepted only the Conexant driver. So hopefully that is good (though not tested yet).
3) And now for the important one. I tried to find what is the manufacturer of the NIC, no luck (without having to open the unit). I checked the invoice (see below), but can't find which NIC. Here is where I need some help. How to get the system to recognize the correct network adapter and load the correct driver.

thanks,



Parts list from Dell:

System
Type:
Latitude X300
Dell IBU: Americas

Quantity Parts# Part Description
1 F2951 KIT, CORD, FLAT, 3F, D3W/3P, PROPOSITION 65, UNITED STATES
1 5Y730 KEYBOARD, 84, UNITED STATES, ENGLAND/ENGLISH, NOTEBOOK,
BLADE II
1 X0213 ASSEMBLY, BASE (ASSEMBLY OR GROUP), NOTEBOOK, 1.2G,
PENTIUM-M, X300
1 5U092 ASSEMBLY, ADAPTER, ALTERNATING CURRENT, 65W, LITEON, WORLD
WIDE
1 H4287 DUAL IN-LINE MEMORY MODULE, 512, 333, 64X64, 8K, 200, 512
1 Y0231 MODEM, 56K, INTERNAL, MODEM DAUGHTER CARD, D480 CONEXANT
ECLIPSE MODEM, V2
1 7T902 KIT, DOCUMENTATON ON FLOPPY DISK, INTERVIDEO, 4.0, WITHOUT
DOLBY HEADPHONE TECHNOLOGY
1 Y0125 ASSEMBLY, DOCKING STATION, W/ADPT, CORD, NOTEBOOK, BLADE II
1 N4200 ASSEMBLY, COMPACT DISK READ WRITE/DIGITAL VIDEO DISK DRIVE
COMBO, HITACHI LG DATA STORAGE, D MODULES, NON-FACTORY
INSTALLED, 3
1 1R159 ASSEMBLY, FLOPPY DRIVE, 1.44M, 3.5" FORM FACTOR, UNIVERSAL
SERIAL BUS, SONY, D MODULES
1 J2711 ASSEMBLY, CABLE, UNIVERSAL SERIAL BUS, FDD, PROPOSITION 65, D
MODULES
1 D0075 ASSEMBLY, CARRIER, METAL, HARD DRIVE, BLADE II
1 F0858 CONNECTOR, HEADER, 2X25, MALE, .5X.5, G, BLADE II
1 J3771 HARD DRIVE, 40GB, 9.5MM, 5.4K, FUJITSU, Z40P
1 R2527 KIT, SOFTWARE, OVERPACK, WXPPSP1A, COMPACT DISKETTE
W/DOCUMENTATION, ENGLAND/ENGLISH
1 U2027 CARD (CIRCUIT), WIRELESS, CAPACITOR, INTEL2100, NOT APPLICABLE