I am also new to timers; I got this example ( I modified little bit ). I hope this may help to you.
I don't know this is the right way or not but it satisfies your needs.

- Rahul

To create something exceptional

-Master4Master

"Confidentiality Warning: This message and any attachments are intended only for the use of the intended recipient(s),
 are confidential, and may be privileged. If you are not the intended recipient, you are hereby notified that any review, re-transmission, conversion to hard copy, copying, circulation or other use of this message and any attachments is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email, and delete this message and any attachments from your system.

Virus Warning: Although I have taken reasonable precautions to ensure no viruses are present in this email, I cannot accept responsibility for any loss or damage arising from the use of this email or attachment."

Speak out for justice and peace,
even if your voice trembles.

From: Sean Farrow <sean..farrow@seanfarrow.co.uk>
To: boost-users@lists.boost.org
Sent: Wednesday, 4 February, 2009 7:41:49 PM
Subject: [Boost-users] [boost.asio] repeating a timer

Hi:

I've just been looking at the boost asio timers, I was wondering whetherthere is a repeat timer, so that my call back will be executed everytime the timer completes.

This needs to execute more than once.

Any help apreciated.

Sean.

__________ Information from ESET NOD32 Antivirus, version of virus signature database 3825 (20090204) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com