If you're uncomfortable hitting directly against a system table, there is also sp_helpdb with no parameters. However, sp_helpdb will give you more information than it looks like you need.
K. Brian Kelley
http://www.truthsolutions.com/
Author: Start to Finish Guide to SQL Server Performance Monitoring
http://www.netimpress.com/shop/product.asp?ProductID=NI-SQL1
K. Brian Kelley
@kbriankelley