I need a Visual Basic expert in MS Office

I do management presentations. I need a macro code or add-in to powerpoint that will automate watermarking and printing. Powerpoint user must be able to select input text (from a text file) in a dialog box the watermark which will be displayed diagonally on the slide and then pull up the print dialog box to print then goes into the next line of the text file to print again and cycle continues until the list from the text file is exhausted