lenovo - Broadcom 802.11 Network Adapter
          1x1 11b/g/n Wireless LAN PCI Express Half Mini Card Adapter
          2x2 11a/b/g/n Wireless LAN PCI Express Half Mini Card Adapter

Updated to {DriverVer=10/26/2011, 5.100.82.130 *} WHQL for XP
here --> http://download.lenovo.com/ibmdl/pub/pc … wa05ww.exe

*  It seems self-evident where some of the non-linear numerology stems from.

PS:  An update to *** above:
http://www.mediafire.com/file/vc7a9azus … -legacy.7z
This uses the newer XP utility included with the updated driver above.

lenovo-specific driver v5.100.82.112 WHQL'ed for XP supports the following adapters:

ASUS-generic+specific driver v5.100.82.112 XP WHQL overlaps 'generic' v5.100.82.94 except for the following HWID's:

For those two HWID's, the old generic may need be retained (unless i find something better)

  However; I note that this driver bluescreens my XP system upon shutdown/restart.
  STOP $7E in bcmwl5.sys {$C0000005, ....}
This file has the same SHA1 hash as the other v5.100.82.112  bcmwl5.sys files.
  I resolved the issue by rolling back the driver to 5.100.82.94

*** I have updated the former 5.100.82.94 pack with the utility (v5.100.82.124) from the lenovo-specific pack, then modifying the setup.ini to remove the CMDline options.  This older driver avoids bluescreens on my old Linksys WMP54GS (from v5.100.82.112).  It is not a small update over the MFG's recommendations. (04/28/2005 ,v3.100.46.0)  I can finally realize how well-built the hardware truly is.  I sure appreciate the HW/network Diagnostics & Site Monitor in the utility.  The ability to reduce transmit power  in the Device Manager (unverified) is what i like most of all.
Also, i have replaced both VisualC++2005 installers with the VC2005 SP1 KB2538242 Redistributable. 
Reference --> http://www.autopatcher.com/forums/topic … __p__17046

Keep in mind that this pack is technically experimental.  Backup your WiFi settings (PW, etc.) before installing.  Backup any important data for further safety.  With the instructions provided, anyone should be able to replicate this pack themselves.
Hash files are included & verifiable with CDCheck.

What this pack does to or for security on an XP_x86 or XP_x64 system; i have no idea.  You tell me.
  It would be refreshing to hear some feedback.  "Paging Mr. Goodspeed."

  here --> http://www.mediafire.com/file/5ftttarll … 4)WinXP.7z

Edit:  lenovo release a generic version of v5.100.82.112 here --> http://download.lenovo.com/consumer/mob … wm03ww.exe
           Unfortunately, this one bluescreens too.

* i note peak D-P-C latency is ~66% that of 5.100.235.19 - need confirmation for 'n' incl. 5GHz
         - this should be observed by a statistically-significant system latency decrease,
           &  statistically-significant performance/battery-cycleTime increases

*** installation note for those using previous BCM utility:
          1) export your connection authentication details through the 'Wireless Networks' tab in the utility first
                or make note of your previous authentication method & password(s)
          2) uninstall the old utility before installing new version

If I can help by uploading my current version 5.100.198.22 somewhere, let me know. I'd love to try the newest version available and see if it resolves this issue.

Note:  In order to install the utility, the setup.exe included must be extracted, & the extracted setup.ini must be modified to show "CmdLine=".  Use the extracted Setup.exe to install. (Make note of wireless password/setting, or use the 'export' function in the old utility)

Note2:  The old VWL folder from driver "broadcom-wlan-xp-5604835" may be needed for 'Virtual Wireless LAN' support.

Seems to be more responsive upon startup & SB/Hibernate, no major delay for sys access anymore.