One more set of vector circles with different design. Such element very popular among graphics designers and used to create backgrounds, patterns and othere decorative elements for vector illustrations.
Vector files very easy to edit – remove elements, add other elements, rotate, change color, change size. Vector illustrations can be opened in many drawing program, for example: PMView, Xara, Flash, Corel Draw, Quark, and sure All Adobe programs Illustrator, Photoshop, Indesign etc. can be used to open and edit vectors. As for me, I prefer yo use Illustrator CS3!