Form Linking (again!)

Hi,

I've just discovered ZOHO and have started playing around with deluge scripting which is fantastic for a non-programmer like me but, here's my problem:

I have 3 forms A,B and C each with a CustomerID. Form A contains the address, B preferences and C past orders. How do I link A, B and C automatically so that when I navigate from one the correct linked data is shown in the other?

Thanks for your help.

Kavin.