If you are tired of seeing the address data laid out n European format (street first, house number next, etc) it can be changed in the IMG.
Call transaction SPRO, select Reference IMG and go to the following path:
SAP Netweaver > Application Server > Basis Services > Address Management > International Settings >Choose Address Screen Layout
Choose US settings and you will be happy.
One place you can check this is in transaction SU01. On the Address tab for a new or existing user, select the 'Assign New Company Address' button, enter a name for the new address an dthe following screen will ask for the detailed address info. If the street name preceeds the house number, you know the system is set to the European address format.
Hope this helps...