Unequal margins using InDesign and Vista 64

Completed a newsletter using Adobe InDesign and printed it using an HP Photosmart 2610, running Vista Ultimate 64. Left and right margins were not equal.
Saved the file to an internal backup drive and rebooted in XP Pro, using a dual boot system. Brought the document up in InDesign using XP Pro, printed it, and the margins were just right.
Did a reinstall of the HP 2610 and installed a couple of updates, but can't get Vista to print the document with equal left and right margins, while the same document prints normally in XP Pro. I suspect Vista is the culprit although other features of InDesign work well in Vista.
Hope there are some suggestions out there. Thanks.