help me plz

DEAR SIR. IAM MOHAMMED KLAIB ,MASTER STUDENT.IN NEAR EAST UNIVERSITY MY THESIS IS DATA LOGGER SYSTEM.I USE PHP TO READ DATA FROM SERIAL PORT AND STORE THE DATA IN THE MYSQL DATABASE SERVER. MY 1ST PROBLEM WHEN READ THE DATA FROM SERIAL PORT IT READ CORRECTLY BUT AS YOU KNOW I SHOULD COLLECT DATA CONTINUOSLY (INFINITY LOOP). BUT AFTER 30 SEC OF RUNNING THE PROGRAM, I HAVE THIS MASSEGE Fatal error: Maximum execution time of 30 seconds exceeded in c:\program files\apache group\apache\htdocs\read.php on line XX. SO HOW I CAN INCREASE OR REMOVE THIS EXECTION TIME (TO MAKE IT FREE). 2ND I NEED TO PLOT A CHART REPRESENT TIME WITH TEMPERATURE FOR EXAMPLE.THEY ARE TWO COLOMNS OR FIELD IN THE DATABASE TABLE.I USE WIDOWS 2000 AND PHP4.SO I HOPE TO HELP ME IN THAT. AND THANKS TO YOUR EFFORT --------------------------------- Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online