Here's a link to the information sheet for that station:
Pearl River Train Station
Looks like there is no bus service there. You may have some kind of taxi service in town. Ask around or call the station.
It's about a 30 minute walk, which might be ok in the spring/summer/fall, but in winter wouldn't be good.
To find info for public transportation and walking times, you can use HopStop:
http://www.hopstop.com
GOod luck with your search.