Tracking Number - Need to split number

[Odie]

Hi, I need to split the parcel tracking number to allow my customers to click the link and have instant status. Any ideas on how this can be done?

 

I enter the tracking number into PS 1.6.0.8 as...    'xxnnnnnnnn' how can I split it as per below?

 

The URL (web address) to call the Track and Trace engine must be constructed as follows:

http://www.posthaste.co.nz/phl/servlet/TAndTServlet?page=1&product_code=xxxx& serial_number=nnnnnnnn&request_id=1

1. Replace the string xxxx with the actual product code
2. Replace the string nnnnnnnn with the actual ticket serial number
3. The result page is returned as a plain HTML response without frames.