Moved to General Malware Discussion > Home User Assistance.
Yes Sircam is known: http://vil.nai.com/vil/content/v_99141.htm see the removal tab.
If you are doubtful whether or not you have an infection try running Hijackthis and post its log on one of the following forums for expert analysis and advice.
Do not post the log here, we can't help!
Post the logs at a specialist Forum:
Be sure to read all the sticky announcements/instructions at the top of each malware forum!