[ic] How can I construct a full URL

[Khai Doan]

Dear list,

I am working on integrating Interchange with Pocketpass payment 
system.  Pocketpass payment system require that Interchange redirect the 
shoppers to a special page hosted on Pocketpass server where shopper can 
enter his username and password to authorize the payment.  After the user 
authorize the payment, Pocketpass server will redirect the shoppers to a 
success/failure page.

How can I construct a full URL for the success or failure page?

Also,  Pocketpass need to pass some information back to Interchange.  How 
can I access these information?

Any help on these matter would be greatly appreciated.

Thanks

Khai Doan