1) You can use formulas. Check again this page:
http://dn.bergsoft.n...quick-start.htm
There is a section with formulas support, so you can use:
Cell[x, y].Text := '=SUM(A2:A6)';Not sure if you used Excel before, it's similar in this way.
2) To avoid editing, you can try to use next property:
NextSheet1.Cell[0, 0].ReadOnly := True;