HI Paul,
pls check below point & for more clarification check below links & you-tube video also...
Import Profiles - RZ10
Configure STMS
Delete the Entries from SMLG Transactions
Delete the Entries from RZ12 –RFC Server Group Maintenance
Change Client Settings SCC4
Check out Entries in AL11
Reapply the new SAPLICENSE
Reschedule Housekeeping Jobs- SM36
Run SGEN
http://scn.sap.com/thread/1325225
SAP ECC Installation videos - post installation steps 1 - YouTube
Regards
Nayeem