GPS Tracking Java

Dear, I am working on a project with gps tracking devices. The goal is that the devices sends every 10 seconds their coordinates to a server. I created already that server (multithreaded), but I have a problem with receiving the information.(I described that problem also on [login to view URL]) In fact I am looking for someone that could help me fixing this problem. Thats the only thing. I think while doing this job it should be possible to conversate by skype or MSN, because I need to put on the tracker for testing ;) Thanks Wouter