link arcmap to excel- a button required

hello averyone.

i have an application in arcmap, in which point locations are added in arcmap thruogh geoprocessing model, which is customized as a buttion and just one click load the locations from excel to arcmap as a layer. now as these locations change with time and every time user has to go to the folder where these excels files resides. now i am looking for a button that may be created through python . whenever i want to make changes in excel file i have to just click that button and excel files open for me. i dont want to go to folder to open the required files.
if someone understand the input would be highly appriciated.
thanks