nnobakht 0 Light Poster

Hey guys,
I have two DataGridViews (which are not databound). The first one is dynamically populated when the application is started by reading a specified XML schema. The second one the user enters names of coloums and the coloumn number in which they are located in.
I need a way to allow the user to select a certain row in the first Grid which is automatically populated and tell the program which row in the second grid it maps to.
Right now i have a coloumn in teh first grid for the user to enter the row number but there is so many things that could go wrong with that.
Any one have any ideas on how i can accomplish this? i was thinking of maybe drawing lines frm one to the other but i have no idea how to do this.