Bueno, solo faltó definir la segunda tabla de la segunda columna, jeje, error de dedo.
Código:
<table border=1><tr><td valign=top>
<table border=1><%
Set oConn = Server.CreateObject("ADODB.Connection")
oConn.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source="& Server.MapPath("prueba.mdb")
Set oRS1 = Server.createobject("ADODB.Recordset")
Set oRS2 = Server.createobject("ADODB.Recordset")
oRS1.Open "select * from columnas",oConn,3,3
oRS2.Open "select * from nombres",oConn,3,3
While Not ors1.EOF%>
<tr><td><%=ors1(1)%></td></tr>
<%ors1.MoveNext
Wend%>
</table>
</td><td valign=top><table border=1>
<%While Not ors2.EOF%>
<tr><td><%=ors2(1)%></td></tr>
<%ors2.MoveNext
Wend%>
</table></td></tr></table>
<%
oRs1.Close
oRs2.Close
oConn.Close
%>
Saludos