Well...it seems hard..but its not that much of a difficult stuff...u need to have antivirus software.So get a good antivirus software from cd.its dangerous to get it from internet itself.

Step1
Firstly Trojan can be present in any spy program like Webcam recorder or even Buddy spy software....You need to have Authentic antivirus software with updated version to detect it....

Step2
After You detect it just click on disinfect option present in menu where it says virus detected.IF Its present simply disinfect it by that..Trojan and worm can be two different viruses seperatly also.....so look out...

Step3
IF disinfect option is not there or option of healing is not there than dont worry there will be option of Quarantine or delete...just click on that and do it..

Step4
If you dont have any good antivirus software but u know where trojan is then just go to that destination folder and delete the file containing trojan..its damn easy thing to do