Macro's

Hi Chris

Thank you for your question

It might be possible to set up a macro to run based on the timer object in visual basic. It is difficult to be precise here as there are a variety of variiables and it depends on the context in which you working.
It is certainly possible to run a macro when a certain event occures (e.g. when you one a workbook). this simply requires you to set the macro in the on open event of the workbook in question.
This however requires a good knowledge of VBA

Regards

Stephen