reply to Deschain
Re: Monitor Wavy Line Problem Could be interference - do you have any speakers near by the monitor/cable? VGA is an analog signal and susceptible to interference - poor quality VGA cables exhibit this condition even more so. Check the cabling in/around the PC - you could try moving them around while the wavy lines are on screen to see if there's any effect.
Also, if you're BIOS has the option, you could try enabling (or disabling if it's already enabled) the 'Spread Spectrum' setting.
Finally, the PSU could be the culprit as well.