This is a reposting from the Virus/Trojan forum because the main issue now is no connectivity on our Dell Dimension 4700 desktop (Windows XP, SP-2), which previously had no problems.

The brief history is that, probably as a resultl of a trojan (something called Conhook.b), which I believe has now been expunged, I cannot connect to my ISP (Verizon Onliine). I have already talked to them. They said that when we ran the "ipconfig/all" test on the command line and we got a message saying that there was an "internal" problem, they could not do anythihg. I then talked to a  Dell tech for an hour or so and he checked some connectivity issues (including trying to delete all the Verizon Online setup files in order to see if the original error message box twhich is headlined Verizon Online Updates when booting up "Error connecting to Inernet....Pc 0x82600264". He was not able to resolve the problem and it still reappears.  I also tried changing my LAN settings on the problem desktop PC based on this laptop PC using the LAN Settings transfer Wizard....the error still appears.  We get similar errors, of course,with Outlook Express (No Socket Error:11004, error number 0x800ccc0d.)

 

I have also tried using MS support recommendations, incl. resetting Winsock protocol.  Unfortunately, I think the trojan had also compromised our System Restore capability, so am unable to get a previusly good condition either using a pre-infection restore point (there are none shown as available) or by rebooting in SAFE mode.  Nothing has worked yet.

 For info. the results of the IE diagnostics file is as follows:

Last diagnostic run time: 02/07/08 22:18:20 WinSock Diagnostic
WinSock status

info All base service provider entries are present in the Winsock catalog.
info The Winsock Service provider chains are valid.
error Provider entry MSAFD Tcpip [TCP/IP] could not perform simple loopback communication. Error 10050.
error Provider entry MSAFD Tcpip [UDP/IP] could not perform simple loopback communication. Error 10050.
error Provider entry RSVP UDP Service Provider could not perform simple loopback communication. Error 10091.
error Provider entry RSVP TCP Service Provider could not perform simple loopback communication. Error 10091.
error A connectivity problem exists with an installed LSP.
action Automated repair: Reset WinSock catalog
action Successfully executed: netsh winsock reset catalog
info System restart required
 
Network Adapter Diagnostic
Network location detection

info Using home Internet connection
Network adapter identification

info Network connection: Name=Local Area Connection, Device=Intel(R) PRO/100 VE Network Connection, MediaType=LAN, SubMediaType=LAN
info Network connection: Name=verizononline, Device=WAN Miniport (PPPOE), MediaType=PPPOE, SubMediaType=NONE
info Ethernet connection selected
Network adapter status

info Network connection status: Connected
 

HTTP, HTTPS, FTP Diagnostic
HTTP, HTTPS, FTP connectivity

warn HTTP: Error 12007 connecting to www.microsoft.com: The server name or address could not be resolved 
warn HTTPS: Error 12007 connecting to www.microsoft.com: The server name or address could not be resolved 
warn FTP (Passive): Error 12007 connecting to ftp.microsoft.com: The server name or address could not be resolved 
warn FTP (Active): Error 12007 connecting to ftp.microsoft.com: The server name or address could not be resolved 
warn HTTPS: Error 12007 connecting to www.passport.net: The server name or address could not be resolved 
warn HTTP: Error 12007 connecting to www.hotmail.com: The server name or address could not be resolved 
error Could not make an HTTP connection.
error Could not make an HTTPS connection.
error Could not make an FTP connection.
 

I am using the same DSL modem, ethernet cable, and telephone cable as for this laptop PC, so the hard connections are OK; I have powered DSL modem and unplugged ethernet cable several times as well.  I'm about out of ideas, other than reload Win. XP, an unappealing prospect. Appreciate any further ideas and help very much....thanks.