| posts: 880 | Location: Arkansas
i've never used an anti-static wristband, although i recommend you buying one.
anyway, when i assemble/handle exposed computers and parts, i usually ground myself by touching the power supply or an exposed metal part of the case frame. i also make it a point not to drag my feet across the carpet before handling parts. lastly i usually work on my desk, not on the carpet.
others say you can keep your power supply plugged into the wall, but turn off the power switch at the back of the power supply. again, i've never done that. but it's good stuff to do as precautions. it only takes one ESD to ruin your stuff.