which is the best antivirus software remove trojan virus?

yes, indeed your right.. but NOD32 is too light.. I can't recommend that kind of anti-virus, cause it can't remove some certain viruses..

Maybe try installing different anti-virus instead using old anti-virus, or you can system restore your computer if you want, that may help you. ^_^

But when i scan using anti virus 360, it has got detected and removed also but after i restart system and scan once again, it will detect it again and deleted. so i don't know what to do now.

dont u think two antivirus at a time makes pc heavy....

Yes it will, but it depends on your computer, if you have the latest one, then it'll be no problem, at least you have the average PC, but here, the specs. of the computer is 1.6ghz. AMD Sempron, 1GB memory, 64MB Video card, the anti-virus that are installed here "AVG and AVAST" Avast is good at detecting harmful websites, and download files, while AVG is good for Virus protection, Trojan Horse, Worm. etc.

thanks for your suggestions

Thanks for all your advice on this virus issue, finally i had managed to remove this virus permanently. there was a one option called turn off system restore for all, this should be turned off before we start scanning viruses then it won't restore deleted viruses after we restart computer. Thanks a lot for all your advice

yes, indeed, they can make some bomb viruses, that will affect your computer in a certain time that they specified.. Maybe that's how they do it.. Whew.. Business is still business..