Power steering belt replacement

2005 Nissan Quest-V6 (3.5) 62,000 miles. i am trying to replace both belts on the van. the front serpentine belt was challenging, but is complete. While i had the serpentine belt off, i cut the power steering belt and am having problems loosening the p.s. pump in order to get the new belt back on. Please help me keep my few remaining hairs on my head.
Thanks