Kia Ora,
Please be advised. The following link from Microsoft will provide you with details for the minimum hardware and software requirements for running SQL 2005 on your machines.
http://msdn2.microsoft.com/en-us/library/ms143506(d=printer).aspx
For other SQL 2005 information, please visit this link: http://www.microsoft.com/sql/default.mspx
Regards,
Help Desk