Who is Barry (i'm quite new on prepaidgsm.net) ?
To show how it's work, simply look at the webpage source

Contact me if you need help.
About Delay : I found it useless if you don't use a 56K on the line you want to use (GPRS is on "pause" when you receive a call).
And the page would be heavier, and longer, to use it.
Beside, the minimum delay is 1 min, this is really too much.
I also made this page to dial faster.
Who really use the Delay function ?