i don remember the topic, the file was big in size any way one more help we also started the same heart beat monitoring project any idea as how to implement the same for monitoring many people at a time like collecting all ppl's data sending to a centre monitoring system then connecting it using gsm and sendind sms to the person incharge i hope i din confuse that much...pls do reply waiting for ur reply..thanks in advance. the file name was file.000 it was big one like i entered my mail address frm eda board that file i received..