4 Jan 2014, Dell X200 experiencing Blue Screen Of Death (BSOD)
I am suspecting this is another communications crash.
Running ipconfig /all  at 08:58....
  Host Name:    lamptonlap
  Primary DNS:  ssl.berkeley.edu
  Node type:   peer-peer
  Ethernet adapter local area connection
  Physical address:  00-08-74-4E-55-65
  Ethernet adapter Wireless Network Connection:
  Physical address:  00-02-2D-87-2B-A5
  IP address:        198.128.196.32
  Subnet Mask:       255.255.240.0
  Default Gateway:   198.128.192.1
  DHCP Server:       131.243.64.13
  DNS Servers:       131.243.5.1
  Primary WINS:      131.243.129.11
  Secondary WINS:    128.3.132.9
  Lease obtained:    Tues 28 Jan 2014 08:59
  Lease expires:     Tues 28 Jan 2014 09:29

Re-running ipconfig /all  again 11 Feb 2014:
  same but no DHCP, no WINS, no lease showing. 

Perhaps ip addresses are good longer term, and I can use Satow's
manual addressing mode to avoid future BSOD?

Start::ControlPanel::NetworkConnections::Wireless:General;
Scroll down to bottom "TCP/IP" and click it;
Click Properties;
Click Manual and enter IP address...
  IP address:        198.128.196.32
  Subnet Mask:       255.255.240.0
  Default Gateway:   198.128.192.1
Manually enter DNS server...
   Preferred DNS;    131.243.5.1
   no alternate. 
Click OK; Close; and Reboot.
Works: clean restart, has full communications support, no BSOD.

3 Feb 2014: current path, after cleanup, from echo %PATH%
  C:\texmf\miktex\bin;
  C:\Program Files\eDrawings2003\;
  C:\WINDOWS\system32;C:\WINDOWS;
  C:\WINDOWS\System32\Wbem;
  C:\Program Files\Common Files\Adaptec Shared\System;
  C:\Program Files\Hummingbird\Connectivity\8.00\NFSClient;
  ":C:\Program Files\Norton SystemWorks\Norton Ghost\";
  C:\Program Files\Bonjour\;
  C:\Program Files\QuickTime\QTSystem\;
  C:\BC5\BIN;C:\Program Files\Java\jdk1.5.0_06\bin;
  C:\Program Files\Bonjour


6 Feb 2014: booted up but "IP address conflict"  yikes. Tried to open
  Start::ControlPanel::NetworkConnections::WirelessNetworkConnection
but that utility refused to open!  
However, right clicking it offered a "Repair" option.
Repair worked:  Windows disabled wireless then reenabled wireless.
Suddenly, IP address became OK and browser became live.

Running ipconfig /all gives me the following.....
        Physical Address. . . . . . . . . : 00-02-2D-87-2B-A5
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 198.128.196.32
        Subnet Mask . . . . . . . . . . . : 255.255.240.0
        Default Gateway . . . . . . . . . : 198.128.192.1
        DNS Servers . . . . . . . . . . . : 131.243.5.1


Previous BSODs (Sept 2007, Mar 2006, Oct 2005) were remedied by editing 
the TCP/IP Properties.  However Bruce Satow installed fixed IP addresses
appropriate for SSL, so automatic IP addresses (for LBL) did not allow
communications via the local wireless network. 

Start::Settings::Network Connections
  -> Local Area Connection
  -> General
  -> Properties
  -> General
  -> Scroll to bottom "TCP/IP"
  -> double click "TCP/IP"
  -> General...
      (.) Obtain IP address automatically
      ( ) or manually...
      (.) Obtain DNS automatically
      ( ) or manually...

SSL standard is to use fixed addresses entered manually.
LBL standard is to use automatic. 
Prior to Sept 2005, automatic worked everywhere.
Since Sept 2005, automatic causes BSOD on WinXP.
Bruce Satow does not know why.  Drivers? Updates?

Sept 2005: Bruce installed these manual addresses:
  IP= 131.243.51.196
  sub= 255.255.252.0
  def= 131.243.48.1
  DNS= 131.243.64.2
  and  128.3.34.186
  and  131.243.64.3

30 March 2006  BSOD again:
Booted up using 8 to safe mode
Ran ipconfig/all  and discovered...
   IP= 131.243.51.196
   sub=255.255.252.0
   def= 131.243.48.1
   DNS= 131.243.64.2
   alt= 128.3.34.186
Start::Settings::NetworkConnections::LocalArea
Click General::Properties, choose TCP/IP
Select manual addresses not automatic
Click OK  OK
Start::Shutdown::Restart.
Works; no BSOD, communications at LBL is OK.  

27 Sept 2007  BSOD again
Ran ipconfig /all and discovered...
   IP=   131.243.51.136
   sub=  255.255.252.0
   def=  131.243.48.1
   DHCP= 131.243.64.10
   DNS=  131.243.64.2
   and   128.3.34.186
   and   131.243.64.3
   Pri WINS = 131.243.129.11
   Sec WINS = 128.3.132.9
Installed these addresses into ControlPanel::Network::LocalArea
Reboots; no BSOD; communications is OK at LBL.