NOOB ALERT: Two pair on 5th street, potential scary board Micro high

[TheCroShow]

I'm new to Stud so I'll be checking out this section of 2p2 a lot. This hand may look simple and boring to most seasoned 7 stud players, and as a new player I would like to get some perspective from seasoned vets.

Anyway I'm playing $0.50/$1.00 fixed high

Here is a screenshot: http://www.imagedump.com/index.cgi?p...&tp=330699

I lead out obv right? Now when PJTHED1964 calls and:

a)catches a heart, do i assume I'm beat? check/call down?
b)misses a heart, i lead out obv and keep pounding chips in til showdown?