doctype

Hi,
 
I just entered my website < http://senna.sjsu.edu/psmith/15_linda/index.html > 
into your css testor and got a CSS level 2.1.
My question is, how do I configure my DOCTYPE from this information?
 
Thanks, Linda
_________________________________________________________________
Connect and share in new ways with Windows Live.
http://www.windowslive.com/share.html?ocid=TXT_TAGHM_Wave2_sharelife_012008