Here are several articles from MS on configuring SQL Mail. Probably the best one (from a step by step perspective) is the third one. Note that there are some issues with SQL Mail (which I hope get addressed in 2005!). Just be warned!
INF: Frequently Asked Questions – SQL Server – SQL Mail, Microsoft KB 311231, 11/14/2003
INF: Common SQL Mail Problems, Microsoft KB 315886, 11/14/2003
INF: How to Configure SQL Mail, Microsoft KB 263556, 11/14/2003
FIX: SQL Mail 2000 Needs Microsoft Outlook 2000 Client, Microsoft KB 281293, 11/5/2003
BUG: SQL Mail Not Fully Supported w/Cluster Virtual SQL Servers, Microsoft KB 298723, 12/3/2003
Originally Posted by cruickshanks
Have you hugged your backup today?