Hello MonkeyInJapan,
as one of many around these forums that have been burnt by what seems a wonderful program, you should really ask yourself a few basic questions before purchasing.
I am assuming that Clockwork is a program that claims to be able to pick winners?
First thing to do is to get a list of recent winners... many programs have wonderful glossy brochures which have results that can be up to 12 months old... Get recent results.
Ask them if you can pay from profits.
Ask them if you can follow their tips for a period of time... A sort of testing period.
Ask them what sort of guarantee they offer.
Ask yourself, and them, why they are selling "the keys to the kingdom".
Finally, if it sounds a little too good to be true, it probably is.
There's some interesting reading on the propunter website at
http://www.propun.com.au/betting_systems.html
My final word of caution... be wary.
Cheers,
Chris.