Spider veins are a common problem we see in my office. Here's a nice article from NYT as well as some information from my web page on spider veins:
http://www.nytimes.com/2009/09/10/health/10SKIN.html
http://www.elizabethandersondermatology.com/services/spider_veins.aspx
Elizabeth Anderson, MD
Staff Dermatologist, Elizabeth Anderson Dermatology
Knoxville, TN
www.elizabethandersondermatology.com