How to store data from second row &second column onwards

I have a matrxi as below:

Data 
1 2 3
3 4 5
6 7 8
But I have column names (&rows names same as column names)
A B C and I want to store my out put as below:

  A  B  C
A  1  2  3
B  3  4  5
C  6  7  8

I am unable to store to like this.Kindly help me, many thanks in advance.

Answer 1

[the cyclist]

Here is one way:

data = [1 2 3; 3 4 5; 6 7 8];

label = {'A','B','C'};

labelAndData = cell(4,4);

labelAndData(1,2:4) = label;
labelAndData(2:4,1) = label';

labelAndData(2:4,2:4) = num2cell(data)

[Kanakaiah Jakkula]

Sir, It works, but can't I store in double format(is it due to lable, that it is stored in cell format)?