You say "I am experiencing some problems" but you do not say what the
problems are.

Can you open the file in Excel 2007?

If you cannot open it what error message do you get?

If you can open it, does the code  run? If you get an error message what is
the message? If the code does not do what you expected what does it do
wrong?

Can you include the code in your post so we can understand what it is trying
to do?