ISP SET UP

Thanks go out Chas for help. Initially, I requested for /24 to be on the safe side.
Currently, I have the ff devices to setup in my Datacenter.
1 ASA 5510 running IOS ver 7.2 - for checking traffic coming in (In-bound)
1 3825 Data Centre Equipment
1 3750-12-S-E for Edge traffic analysis
1 2960 to be installed on client premises
So Diagram as follows -
ASA5510==>c3825==>c3750== - in all in DC .
These will have a Fibre Optic cable connected directly to the client site and will be terminated on CISCO 2960G.

How do I configure the client site IP given the address from the TELCO COMPANY.

Please help.