cannot use internet on infected computer

[SuperDave]

The default gateway is missing on that computer. That's what I'm trying to repair. Please try this:

Go Start>Run (Start search in Vista and 7), type in:
cmd
Click OK (in Vista, while holding CTRL, and SHIFT, press Enter).

At Command Prompt, type in:
netsh int ip reset reset.log
Hit Enter.
Type in:
netsh winsock reset catalog
Hit Enter.

Restart computer.

[JAJsangel]

That didn't work either 

[immental1200]

Edited.

[JAJsangel]

should I post about this in the networking section???

[SuperDave]

should I post about this in the networking section???

You may just as well post it there. I've reached the bottom of my bag of tricks.
If you can succeed in getting connected to the net, please run the ESET scan.

To uninstall ComboFix

• Click the Start button. Click Run. For Vista: type in Run in the Start search, and click on Run in the results pane.
  
• In the field, type in ComboFix /uninstall
  

(Note: Make sure there's a space between the word ComboFix and the forward-slash.)

• Then, press Enter, or click OK.
  
• This will uninstall ComboFix, delete its folders and files, hides System files and folders, and resets System Restore.
  

**************************************************
Clean out your temporary internet files and temp files.

Download TFC by OldTimer to your desktop.

Double-click TFC.exe to run it.

Note: If you are running on Vista, right-click on the file and choose Run As Administrator

TFC will close all programs when run, so make sure you have saved all your work before you begin.

* Click the Start button to begin the cleaning process.
* Depending on how often you clean temp files, execution time should be anywhere from a few seconds to a minute or two.
* Please let TFC run uninterrupted until it is finished.

Once TFC is finished it should restart your computer. If it does not, please manually restart the computer yourself to ensure a complete cleaning.
***********************************************
Use the Secunia Software Inspector to check for out of date software.

•Click Start Now

•Check the box next to Enable thorough system inspection.

•Click Start

•Allow the scan to finish and scroll down to see if any updates are needed.
•Update anything listed.
.
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Go to Microsoft Windows Update and get all critical updates.

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I suggest using WOT - Web of Trust. WOT is a free Internet security addon for your browser. It will keep you safe from online scams, identity theft, spyware, spam, viruses and unreliable shopping sites. WOT warns you before you interact with a risky website. It's easy and it's free.

SpywareBlaster- Secure your Internet Explorer to make it harder for ActiveX programs to run on your computer. Also stop certain cookies from being added to your computer when running Mozilla based browsers like Firefox.
* Using SpywareBlaster to protect your computer from Spyware and Malware
* If you don't know what ActiveX controls are, see here

Protect yourself against spyware using the Immunize feature in Spybot - Search & Destroy. Guide: Use Spybot's Immunize Feature to prevent spyware infection in real-time. Note: To ensure you have the latest Immunizations always update Spybot - Search & Destroy before Immunizing. Spybot - Search & Destroy FAQ

Check out Keeping Yourself Safe On The Web for tips and free tools to help keep you safe in the future.

Also see Slow Computer? It may not be Malware for free cleaning/maintenance tools to help keep your computer running smoothly.