table header multicolumn and multirow latex
i am newbie with latex. I need to do a table like this:

     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    |     |	     |  		|_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ title _ _ _ _ _ _ _ _ _ _ _ _ _ _ _|
    | A   | B    |   C  	|_ _ _Sub1 _ _ _  _ _|_ _ _sub2_ _ _|_ _ _Sub3_ _ _|_ _ _Sub4_ _ _|
    |_ _ _|_ _ _ |_ _ _ _ _ |_sub1.1_ |_Sub1.2_ _|_s2_|_s3_|_s4_|_s2_|_s3_|_s4_|_s2_|_s3_|_s4_|
    |_m_ _|_ n_ _|_ _1 _ _ _|_ _10 _ _|_ _10_ _ _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|

How can i do it?

thx in advance. 
table header multicolumn and multirow latex
===

i am newbie with latex. I need to do a table like this:

     _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    |     |	     |  		|_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ title _ _ _ _ _ _ _ _ _ _ _ _ _ _ _|
    | A   | B    |   C  	|_ _ _Sub1 _ _ _  _ _|_ _ _sub2_ _ _|_ _ _Sub3_ _ _|_ _ _Sub4_ _ _|
    |_ _ _|_ _ _ |_ _ _ _ _ |_sub1.1_ |_Sub1.2_ _|_s2_|_s3_|_s4_|_s2_|_s3_|_s4_|_s2_|_s3_|_s4_|
    |_m_ _|_ n_ _|_ _1 _ _ _|_ _10 _ _|_ _10_ _ _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|_1 _|

How can i do it?

thx in advance. 