scheduling tasks

[Matthew Freeland]

Salutations.  Does anyone know how to schedule tasks to run at a specified 
time interval?  I have registered a domain name and am using a service 
called everydns.net to route traffic from it's nameservers to my dynamic ip 
address, since I am using roadrunner.  This service requires you to use an 
IP address updating program to send your ip address to it's servers.  The 
problem is, apparently, it must be run manually.  I have placed it in my 
init.d folder, but because I do not plan on rebooting this server often, I 
need a way to run the program at least once per hour.  Is there a way in 
linux to schedule a program to run once per hour?  What would be even better 
would be a script that would monitor my wan ip address and run the program 
when it changes.  Could I write a shell script that would do this, and if 
so, could someone give me a brief example of how it might be done?

Also, I am 18 and have recently joined kclug.  Are there any other members 
out there whom are approximately my age?  I have been using linux for about 
6 months now and absolutely love it.

Thank you in advance.

Matthew Freeland

_________________________________________________________________
The new MSN 8: smart spam protection and 2 months FREE*  
http://join.msn.com/?page=features/junkmail