You don't need to switch on AWE. However it is recommended you grant the SQL

service account the "Lock Pages in Memory" right (you can do this by going

to Start>Programs>Administrative Tools>Local Security Policy and expanding

Local Policies>User Rights Assignment). For more details see

http://blogs.msdn.com/slavao/archive/2005/11/15/493019.aspx

Also, to keep memory usage under control by each instance set max server memory parameter under sp_configure.

MJ