One of the features most requested by Illustrator users has been a good trace tool to turn bitmaps into vector drawings. Adobe stopped upgrading its vector conversion application Streamline some time ago, and the Trace Tool included in Illustrator prior to CS2 was sadly lacking. With Illustrator CS2 and higher, users finally have a great trace tool.
• Using the New Live Trace Feature in Illustrator
• Adobe Illustrator Tutorials
• Bitmap to Vector Conversion