How to keep writing in an Excel Cell

Hi!! I have some information, each of them are matrices so I want to write it on an excel worksheet, the thing is that I don't know how to tell matlab to write 2 cells from the last data it wrote.

For Example, I write a 4x4 matrix on excel so I'm in the cells A1:D4 now I want to write on A6 my nex matrix, I want to know how to link the last row the las matrix uses.

Thanks

[Walter Roberson]

I am not sure how this differs from your previous question, http://www.mathworks.co.uk/matlabcentral/answers/80261-write-in-excel-with-matlab-on-continues-cells ?