Thanks for all your help. Shanta Keller and I are going to be in  
Nicaragua from March 14th to the 20th, if we can meet with someone on  
the 14th in the afternoon or the 15th it would be great. Also the CE  
department has GPS units available and we should be able to get out  
hands on it.  We should also have at least one professor there to talk  
with us at the meeting next week.