I hope you don't mind if I have any further question I get in touch with you.
Just post another question here, if it's related to the overall problem of coordinating GPS with "other things".
If it's a specific question about Servo or Xbee, you should start a new thread.
Don't use Personal Messages for technical questions, if that's what you meant. Others can benefit from your question (and the answers), so keep it public in a thread.
Not sure where you are
Me either. 