En el query analyser lo cheque y si funciona... :S
Código PHP:
<%
cad1 =Request.Form("umd_num")
response.Write(cad1)
Set Rs = cnn.Execute("select umd_uni, umd_sede, umd_ini, umd_fin, umd_tip from umd_crono where umd_uni like '%&cad1&%' order by umd_ini")
While Not Rs.EOF
%>
<TR>
<td><%= Rs.Fields("umd_uni")%></TD>
<td><%= Rs.Fields("umd_sede")%></TD>
<td><%= FormatDateTime( Rs.Fields("umd_ini"),0)%></TD>
<td><%= FormatDateTime( Rs.Fields("umd_fin"),0)%></TD>
<td><%= Rs.Fields("umd_tip")%></TD>
</TR>
<%
Rs.MoveNext
Wend
%>