After the upgrade, the Add User wizard contains company name, address, phone number, fax number, etc...

To maintain this information, use Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\Software\Microsoft\Small Business

You can modify the following Value Names:

Address
Country
Fax
Fax_ACode
Organization
Phone
Phone_ACode
State
TAPIAreaCode
Zip