Sorry Rahul.
do you want gridlines on cells, say that is a header (textbox in the report) or do you want headlines outside of the region occupied by the report in Excel.
If it the former, setting style and color in all controls will give you solid grid lines. If it the later then I am sorry. Please let me know if you get to know how.
"Software changes. This is a rather obvious statement, but it is a fact that must be ever present in the minds of developers and architects. Although we tend to think of software development as chiefly an engineering exercise, the analogy breaks down very quickly. When was the last time someone asked the designers of the Empire State building to add ten new floors at the bottom, put a pool on the top, and have all of this done before Monday morning? " : Doug Purdy, Microsoft Corporation