BleepingComputer.com: backdoor.tidserv!inf virus

My PC is infected with the backdoor.tidserv!inf virus, file affected is atapi.sys. How do I manually remove this virus from the stated file? Please help.

Another issue found while scanning PC with web based virus detection program which detected a high risk virus withn the following location: C:\program files\siteranker\siterankertray.exe artemis!0972822DA0B7 A.K.A Trojware. Win 32. How do I remove or fix this problem ? My Norton Internet Security program did not detect this virus.

Thank you

Follow the steps at Preparation Guide, Before Using Malware Removal Tools and Requesting Help - http://www.bleepingcomputer.com/forums/topic34773.html .

Take note that the requested logs are not to be posted in this forum, which is not authorized to handle malware topics. If you follow the Guide, your topic will end up properly posted in the correct forum.

Louis