Trojan Virus

[Virusstupid]

So I have a major virus that won't allow me to use any program on my computer without an error message stating that file    .exe application can't be opened and asking me if I would like to purchase antispyware software.  Also I randomly get an error message stating My computer is infected by a virus would i like to block the virus and use protection.  When I answer yet to the software my internet explorer window opens with the option to purchase the spyware.  I also get random pop us of *censored* and porn advertisments.  I really need some step by step help if somebody would be kind enough to help me.  I have a Dell Inspiron 1501 with Windows Vista O.S.  I appreciate anyone taking the time out of their night to help me. 

Candace

[telegra1]

I am new here as well, my thread is http://www.computerhope.com/forum/index.php/topic,105710.0.html the second post in my thread is from a moderator and it links to thread that tells you the basic steps to begin the trouble shooting process. You might try those first steps while you are waiting.

[Dr Jay]

Hello, and welcome to Computer Hope.

Please note the following information about the malware forum:

• Only the Malware Specialist Team is allowed to give advice on removing malware from your computer.
  
• From this point on, please do not make any more changes to your computer; such as install/uninstall programs, use special fix tools, delete files, edit the registry, etc. - unless advised by the staff I noted above.
  
• Please do not attach logs or post them in Quote/Code boxes unless requested.
  
• Please do not ask for help elsewhere (in this site or other sites). Doing so can result in system changes, which may not show up in the logs you post.
• If you have already asked for help somewhere, please post the link to the topic you were helped.
• We try our best to reply quickly, but for any reason we do not reply in two days, reply to this topic with the word BUMP
  
• Lastly, keep in mind that we are volunteers, so you do not have to pay for malware removal. Persist in this topic until its close, and your computer is declared clean.

Please visit this webpage for a tutorial on downloading and running ComboFix:

http://www.bleepingcomputer.com/combofix/how-to-use-combofix

See the area: Using ComboFix, and when done, post the log back here.