Help!!! I bought a nice RGB to VGA cable to connect my Visual Cortex to a standard flatscreen LCD monitor, and it’s not working. Any ideas?
Jim
you need a (active) converter, not just a cable.
you can get them cheap on ebay, search for RGB to VGA converter 
should not cost more than 20,- euro
What you want is called a scaler with YPbPr inputs and VGA output. I have an older unit I bought on eBay that works really great for this purpose. Most modern displays these days have HDMI inputs, so if you’re investing in your rig, you may want to consider a nice quality HDMI upscaler instead.