Certain steps you have to prepare before migration
Backup of databases (Also What if multiple server has same DB name)
Logins :- http://support.microsoft.com/kb/918992/en-us
Jobs
SSMS->click on jobs->press F7 for object explorer-> select required jobs -> right click and script it
special handling like
Linked servers / SSIS connectionstrings if used in any of current servers
Replication/mirroring/logshipping if anything in use
This will give you a good start and if there are any minor setting you can handle it later on while testing.