[MiKTeX] Problem in creating a table.

[Indrajit S. <ind...@vs...>]

I wish to create a two way table having factors A1, A2, A3 at the top and
factors B1, B2 and B3 at the left most side. This is easy to make using the
command \tabular. But I am not able draw a diagonal line at the top left
corner of the table to describe the Rows and coulmns of the table. Something
like this :

********************************************
   *   A  *
      *    *	A1     A2   A3
B        **
********************************************
	*
B1	*
	*
B2	*
	*
B3	*
	*
*********************************************

How do I do this in Latex?

Indrajit