^ true, the hard way is sometimes best, but you would still use an AV program to find said virus most of the time right? (keyword most)
and for the toolbox thing i mentioned, i was referring to portable apps. Portable AV, with updated definitions, if said machine you were working on had no internet/couldnt install AV because of virus blocking it, pop in your flash drive and use that OR boot from a cd (or flash drive) with ultimate boot cd or trinity rescue kit.
portable programs come in handy
used them many times, with no problems.