GYM - Digital Timer

Hi,

I am looking to build a digital timer for a gym.

The basic requirements will be a digital display which will count down from a user specified variable value (eg, 2 mins). After the 2 mins is up the device will bleep and then starts to count down from 2 mins again.
The device should also have a reset button which when pressed will begin the 2min countdown again.
As stated before, the countdown time will be variable
The device will also have a standard on/off button.

Can anyone suggest an outline for such a project including what I will need.

Please bear in mind, I am not an experienced project/practical guy but I do have basic understanding of electronics (theory).

Thanks

aLTERNATIVELY, IF YOU KNOW OF A SIMILAR PROJECT (WEB ADDRESS) WHICH I CAN FOLLOW THEN THAT WOULD BE GOOD

I did a Google search and found this: **broken link removed**. There probably are others available.

thanks for the link mate.


Has anyone made anything like this before????