Note: there is a potential customer/partner satisfaction issue with Microsoft Dynamics CRM 4.0 Trial and Time-Limited versions with respect to converting them to production Business Ready Licensing or MSDN development licenses. The following warning has been placed on Microsoft Dynamics CRM 4.0 trial download sites:

MICROSOFT DYNAMICS CRM 4.0 TRIAL OR TIME-LIMITED VERSIONS CANNOT BE UPGRADED OR CONVERTED TO MSDN OR BUSINESS-READY LICENSING (BRL - DYNAMICS PRICE LIST) LICENSES BY APPLYING A COMMERCIAL LICENSE KEY. Customers or Partners who begin with the TRIAL version of Microsoft Dynamics CRM and wish to upgrade the TRIAL to either a MDSN or BRL license, will need to perform a new install using the MSDN download or PartnerSource product downloads (respectively), and import their original Organization; OR, must begin their implementation directly with either the MSDN or BRL non-time limited/production versions. FOR BUSINESS-READY LICENSING PARNERS/CUSTOMERS OR DEVELOPERS WHO HAVE ALREADY BEGUN USING THE MICROSOFT DYNAMICS CRM 4.0 TRIAL, please refer to this Knowledge Base article for instructions and further information:
http://support.microsoft.com/kb/947272/en-us