I have a Dell Dimension 4600 with XP Home SP3 that has not been able to connect to the internet since Avast found and cleaned a virus about mid-Dec. After booting it shows: "Avast will not be able to protect mail/news (error 10050). Please check that the Avast service (AvastSVC.exe) is not blocked by your personal firewall". Plus my SYSTRAY shows "Acquiring network address..." continually. I completed the "read and run me first" with the following results: a. Internet connection is still broken and "Acquiring network address..." still shows continually. b. While doing backup of the data, found many folders were changed to be HIDDEN (which ComboFix seemed to clear up some). I was still able to backup the data because of "view hidden files..." settings. c. Updating Java steps stated 7.1 as the current version, but the link took me to 6.30 so I used that one (wasn't sure where to find 7.1). d. Ran SUPERAntiSpyware. It found an old version and uninstalled it first. After the new one installed, found the screens were rather different than the instructions, but I was able to find and set as directed. It found and cleaned 1 item. I tried using its "Repair Broken Network..." but still no internet connection. e. Ran Malwarebytes. Probably due to no internet, received error "PROGRAM_ERROR_UPDATING (11004,0,No Address found)" but the application still opened. I exited the program, manually downloaded the updates and installed them, but got "The Malware Anti-Malware database is missing or corrupt. Would you like to download a new copy?" I answered NO since no interenet connection. Got another error: "Product files are missing or corrupt, please reinstall product PROGRAM_ERROR_LOAD_DATABASE (0,13,SDKCreate)." So I reinstalled Malwarebytes, got same 11004 message. It still opened the application and I continued with your instructions. Nothing was found. f. Ran Combofix. It found "rootkit.zeroaccess... particularily difficult infection...". When done, still no internet connection. I tried their "manually repair" steps but still no internet connection. g. Ran RootRepeal with no problems. h. Ran MGtools with no problems. Thanks for all the good that you do in this forum.