Edit: I missed Gail's post.:hehe:
I'm not going to bet you.:-)
I know it is over 30 days because I got an e-mail at 30 days telling me that I should purchase.
I may have misread the following link but it appears to state that it is good for 180 days?
http://msdn.microsoft.com/en-us/sqlserver/bb671149
Download the fully functional Microsoft SQL Server 2008 Evaluation edition and try the latest features of SQL Server 2008 free for 180 days.
For better, quicker answers on T-SQL questions, click on the following...
http://www.sqlservercentral.com/articles/Best+Practices/61537/
For better answers on performance questions, click on the following...
http://www.sqlservercentral.com/articles/SQLServerCentral/66909/