  Recent evidence for the existence of pentaquark $\Theta^+$ particle from
several experiments at several different laboratories around the world has
caused great excitement and raised many unanswered questions. We discuss a new
proposal on a high resolution experiment searching for pentaquark states in
Hall C at Jefferson Lab using an untagged bremsstrahlung photon beam employing
both the hydrogen and the deuterium targets by studying the following
processes: $\gamma p \to \Theta^{++} K^-$, and $\gamma n \to \Theta^+ K^-$.
This new experiment will significantly improve our current knowledge of the
mass, the width of the $\Theta^+$ particle if it is confirmed and provide
unambiguous evidence for the existence or non-existence of the $\Theta^{++}$
particle from the \gamma p \to \Theta^{++} K^-$ process.
