Brian,
On the machine where your GeoEvent Processor is setup go to the folder '[GeoEvent Home]\sdk'. Inside you will find a file 'GeoEvent Processor Developer Guide.pdf' Please read 'Appendix C: Logging and Debugging' section of this document. This will explain what is needed to run GeoEvent Processor in 'DEBUG' mode as well as how do you attach a remote debugger to it.
Please let us know if you require further assistance.
Thanks,
Vlad.