Here are some videos that I have created on showing some of the tools that can be used in Coreldraw to construct a vector from a bitmap image.

You'll have to excuse my lack of narration skillz, It's harder to explain what your doing then just doing it.

Simple Vector Tutorial 1: Quicktime:
http://www.mediafire.com/?1jddjnzjcgw

Simple Vector Tutorial 1: WMV:
http://www.mediafire.com/?6szmbfcfbom

Simple Vector Tutorial 2
http://www.mediafire.com/?0xubkmnr4mi