Migrating from 32 bit server to 64 bit server

Hi

We have planned to migrate our portal server from 32 bit to 64 bit.

I need your help in identifying the tasks to be performed after the migration.

Migration will be done by a BASIS consultant.

My job would be to make sure that portal is up and running with all the settings same as it is on the 32 bit old server.

We are operating on EP 7.0 (2004s) SPS 13.

We are using LDAP for internal users and UME for external users.

EP system is connected to R/3 4.7 and BI 7.0 systems.

New system will have different IP address and logical name but same SID.

It would be great if I get the url of the help links and documentation.

Regards

Vineet Vikram