How can i get rid of a trojan virus? What programs are best for deleting viruses and trojans?

I recently was tricked onto a website and typed in my runescape password (an online worldwide game) and it gave me a trojan, able to get my password and other information. How can i delete it, so i can continue playing without it finding out my new password? Also what programs are best for deleting and... show more I recently was tricked onto a website and typed in my runescape password (an online worldwide game) and it gave me a trojan, able to get my password and other information. How can i delete it, so i can continue playing without it finding out my new password?

Also what programs are best for deleting and preventing viruses and trojans?
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