Finding installed MS Server in PCs over Network

Hello y'all,
I am trying to find out if there is code to find out all the MS Servers installed over a Network.
ThanksDownload SQLScan.

http://www.microsoft.com/downloads/details.aspx?FamilyID=9552d43b-04eb-4af9-9e24-6cde4d933600&displaylang=ensql