Moving IW environment from 1 network to another?

System

Hello, i am really in need of some help here. due to performance issues with our architecture (long story), we need to move our whole IW production environment from 1 network to another in a very short time.

1) what is the best practice for this?
2) what all will need to be changed?
3) what issues should we look out for?

The server aliases should not be changing although their IP addresses & names will.

i.e. asnwsp03.fiasn.com becomes asnwsp03.fisn.com

i dont think IW uses hardcoded IPs anywhere throughout the config files or setup does it?

thanks in advance!

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Eric B.
Federated Investors
AOL IM: arthas76