the whole icon or just lines going through the icon? horizontal lines to be more precise...
at work we have a cheap lcd paired with a cheap computer so i duno if its cheap vid card or the cheap lcd thats doing it
try changing the resolution and refresh rate
also drivers of course
are you using the inf that came with the cd?
try reinstalling the video drivers completely with driver cleaner
after all that or before all that, u can take the lcd to another computer to test it...thats probably the most painless way of finding if its the card or the monitor actually...