If it's on a dark background, draw an ellipse over the bulb (The size you want the glow to be) take away the line. Set the fill to 'radial gradient' in it change the middle colour to yellow with 50% transparency and the outer colour to yellow with 0% transparency.
You may need to fiddle with the transparencies but that's the general way I use.
I tried your suggestion to use a radial gradient. How do I make the light bulb flicker then glow? The scene should be -
pull the light chain
bulb sort of flickers as it comes on
then the bulb goes to bright
Thanks for all the help. I downloaded the light bulb and it looks great. Did you make the light bulb? With what tools? I never thought about using a gradient glow in the light bulb. What tools did you use for the gradient glow?