Hi kt0r,
Tanks for infos...
Just for help you about a Revision of motherboard, see
how do I distinguish between the different revisions of the same model?
http://www.gigabyte.com/support-downloads/faq-page.aspx?fid=864-------------------------------
About your Wireless card - Nic Card...
Vendor ID: 1800
Device ID: 0201
SubSystem ID: 00000000
Reversion : 00
================================ 
Description: Linksys Wireless-G PCI Adapter
Driver Ver: 3.1.0.0
Driver Date: 10-18-2005
Driver Provider: Linksys, A Division of Cisco Systems, Inc.
================================ 
Description: Intel(R) PRO/100 VE Network Connection
Driver Ver: 7.0.26.0
Driver Date: 3-4-2003
Driver Provider: Intel
Sorry,I want more infos about your model of card.. 
Check a picture here and give exact infos like explain in picture.
After you have a good id of each NIC - Wireless Card...
Search on Internet, the good drivers for each NIC - Wireless Card.
before Clean drivers and programs ...
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Clean drivers and programs...
Normaly use a ADD Remove program AND Devices Manager on Windows XP... 
remove all pgm, drivers for NIC - Wireless Card...
after, use this softwares...
Driver update notes : before install new driver,
Please completely remove older version driver first with :
Drivers sweeper : 
http://phyxion.net/Driver-Sweeper/Driver-Sweeper/Version-3-2-0/and soft for  Windows Registry :
Ccleaner 
http://www.piriform.com/ccleaner/downloadjv16 PowerTools 2011 
http://www.macecraft.com/downloads/jv16pt_setup_hb.exeWise Registry Cleaner Pro 
http://www.wisecleaner.com/soft/WRCPro.exeCheck on Hard Drive if you have a trace of deleted, removed software in folder.
Use Windows search function for find it. 
and restart the computer.
Gloup_Gloup