Insert Data From MSFLEXGRID Into MS Word?

I am using the following code and I am able to create a new WORD Document and create a Table inside it and insert data into it sucessfully from a MSFLEXGRID (just like a datagrid) on my form. I would appreciate if anyone could tell me how to achieve the same but by inserting the data into a specific document saved as ("c:123.doc") with a table already created inside it.

I just don't want to create a new word file everytime and then create a table and then do the insert.I want to keep my 123.doc with a formatted table inside it and all i need is to insert data from the Grid into it.

Dim oWord As Object
Dim oDoc As Object
Dim oTable As Object
Dim oSelection As Object

[code]....