malks

i need a computer literate person to try and help me debug my computer. basically i know i have a virus (probably many) and i've just realised something appears to be running on my machine trying to get my bank details to my online account logins etc.... can someone point me in the right direction? or do something remotely?? i'm just about to pull the plugs aout of it all and take it to a shop if i cant get some thing as i dont want people stealing stuff from me!