RXTX Communication on Windows 64bit

I am writing a program in Java to interface with the Arduino board over the serial port. I am trying to use the Arduino 1.0.4 IDE with the rxtxSerial.dll but I get a compile error in Java indicating:

" java.lang.UnsatisfiedLinkError: C:\Users\t7653jm\Documents\ArduinoDocs\arduino-1.0.4\rxtxSerial.dll: Can't load IA 32-bit .dll on a AMD 64-bit platform thrown while loading gnu.io.RXTXCommDriver "

It looks like I need to get a version of the rxtxSerial.dll file that is compatible with Win-64. Is there a unique IDE install for 64bit Windows like you have for Linux?