Acrobat 9 defaults to 200 dpi image resolution and 11.7 x 17 page size with the Ricoh IS450 scanner I'm using with the Windows WIA driver. These defaults have to be overridden each time I start a new scan, rather than Acrobat 9 remembering the values from the last scan. Trying to use custom presets I get the message that this scanner does not support presets. OK, but why not Acrobat? I searched the Acrobat 7 scripting guide which I have on my local system and there are no objects that access the scanner, evidently (that I could find).