Glad to help.

>Thanks, works perfect !
>>>Hi All,
>>>
>>>Using Excel automation I want to open an Excel Workbook if it is not already open. How to check for this?
>>>
>>>Thanks beforehand.
>>
>>AFAIK the simplest way to check is to open with low-level fopen function. However, there is a very tiny chance of having the file opened by someone while you're testing for this.