HEY dont worry mate,,,,,,,,,,,,,,im here to help u out of this messs
jus follow these steps n im sure ull get rid of em,,,,
1} run da antivirus scan (if ya got one)
2} if ya dont ,,go to symantec.com where u can run a scan and find the files that are present on your,,system,,,, it will list the names of those virus or trojans do make a note of them,,,,
3} and if you find them {virus} dont try to deletd em,,,,,coz the virus will attach it self to some importan files wich will crash if you delete those files.
4} After you made a note of the trojans,,,,find the tools to get rid of em ,,,,
yes you'll find em on Gooogle.
5} DONT try the tool in normal mode LOG to safemode with networking. once the system is clean get an updated versiion of spyware and antivirus.
6} Do not check any PORN ,,,,,,,,,,,,,,,,,, hahahahahahahahahahahah