Timer events

[EAS]

While this topic is still up, can someone look at my program and tell me how
to keep the total time in one place? (meaning updating it instead of
printing it each time.)

--------------------------------------------


    # Timer, lets the user input a time then alerts with
# system bell when that time is up.

h = 0
m = 0
s = 0

hou = 24
min = 60
sec = 60

print "Enter the hours, minutes, and seconds you want the computer to wait."

while hou < 0 or hou > 23:
    hou = input("Hours: ")
while min < 0 or min > 59:
    min = input("Minutes: ")
while sec < 0 or sec > 59:
    sec = input("Seconds: ")

print

import time

while True:
    time.sleep(1)
    s += 1
    if s == 60:
        s = 0
    m += 1
    if m == 60:
        m = 0
    h += 1
    print h, ":", m, ":", s
    if h == hou and m == min and s == sec:
        break

print "\a\a\a"

exit = raw_input("\nPress enter to exit.")