Two post-pro solutions... The lensflares on the right are from Universe by diardsoftware.com. They are only rendered as single point bright lights, but this is a very economical solution as it is a stand alone program that you can import jpegs into and add the effects on top of them. The lensflare on the left is the Photoshop default. Photoshop 6 or less can be had on eBay for a pretty good price. Photoshop can also be used for the lightning issue.