Como Optimizar la Memoria Windows 2003 Server SBS Premium

Buenos Dias Tengo un servidor con Windows 2003 Server SBS premium
le tengo instalado el exchage, y el Isa server. con 2GB de ram.

Pero en los informes de rendimiento diario siempre me da este mensage.

le cambie el swich al boot.ini con los identificadores /3GB /USERVA030
pero de igual manera hoy salion nuevamente el mensaje.

De antemano muchas gracias por su ayuda

A large amount of memory is committed to applications and processes.
Consistently high memory usage can cause performance problems.

To determine which processes and applications are using the most memory,
use
Task Manager. Monitor the activity of these resources over a few days. If
they continue to use a high level of memory and are less critical
processes
or services, try stopping and then restarting them.

You can disable this alert or change its threshold by using the Change
Alert
Notifications task in the Server Management Monitoring and Reporting
taskpad.