A Sunburst is a design or figure commonly used in architectural ornaments and design patterns. It consists of rays or “beams” radiating out from a central disk in the manner of sunbeams. Sometimes part of a sunburst, a semicircular or semi-elliptical shape, is used.
Vector illustrations can be edited in different graphic programs, for example: Corel Draw, PMView, Xara, Flash, Quark, and certainly All Adobe programs Photoshop, Indesign, Illustrator etc. can be used to open and edit vectors. As for me, I prefer to use Illustrator CS3!