Very simple i am sure all i need is a bit of code to count the number of open workbooks.

Incase you are curius why i am finishing my dad's work off, being as he uses the command to open the previous workbook if there are any other workbooks open when it starts it will crash part the way threw running, so i am adding a message which pops up if there are other workbooks open and then close them if i can be bothered.