webdav enabled windows server 2003, "SEARCH" http method available

Question

webdav enabled windows server 2003, “SEARCH” http method available

BUT... is not in the responseheaders for "DASL" (using http options), only

e.g the following would return http 400 bad request.

HTTP SEARCH

<?xml version='1.0'?><DAV:searchrequest><DAV:sql> some query </DAV:sql></DAV:searchrequest>

using asp.net