Trojan Horse Downloader.Turown.A

I just did a virus scan and it came back saying i have two virus’ in muy computer. It said that it cant heal them so it said to move them to the vitus valt and when i tryed to do that it said that it couldnt be moved there. The virus is called Trojan Horse Downloader.Turown.A and the other one is called Trojan Horse SecThought.B I dont know where they came from and i dont know how to get ride of them so if you could help me i would really appricate it you can either reply to this message or you can email me at smf41902@stjoelive.com i would really appricate it
Thanks Shaun

Run an online scan using TrendMicro Housecall to see if it is detected.

http://housecall.trendmicro.com/