I used the mouse trick last summer - make the screen black so your pointer is the only light source, then 'herd' the thunderbug with the mouse pointer until it gets to the edge of the screen - it will be attracted to the back light and disappear round the back of the monitor to its doooom - mwahahahahah

(It's harder than it sounds and was actually quite an addictive little game - but then I have simple tastes!)