GUEST MEM - VMWARE

GUEST MEM - VMWARE

I am reviewing an esxi 4.1 host memory usage I would like to lower some of
the memory usage on some virtual machines.
For example here I have a windows 2003 server
This server is using 1GB Ram one more than it needs, I want to have a lean
environment for the ESXI hosts.
Here is an example of my usage, am I correct thinking the lower guest
memory VMs can have the memory resources lowered.
GUEST OS HOST MEM - MB GUEST MEM - %
Microsoft Windows 7 (32-bit) 2089 15%
Microsoft Windows Server 2003, Standard Edition (32-bit) 3037 10%
Microsoft Windows Server 2008 R2 (64-bit) 0 0%
Microsoft Windows Server 2003, Standard Edition (64-bit) 2065 4%
Microsoft Windows Server 2003, Standard Edition (32-bit) 2043 11%
Microsoft Windows Server 2003, Standard Edition (32-bit) 2016 12%
Microsoft Windows 7 (64-bit) 1058 14%
Microsoft Windows XP Professional (32-bit) 2091 12%
Microsoft Windows Server 2008 R2 (64-bit) 16549 12%
Microsoft Windows XP Professional (32-bit) 995 12%
Microsoft Windows Server 2003, Standard Edition (32-bit) 2020 4%
Microsoft Windows Server 2003, Standard Edition (32-bit) 1013 6%
Microsoft Windows Server 2003, Standard Edition (32-bit) 2010 13%
Microsoft Windows XP Professional (32-bit) 3047 10%
Microsoft Windows XP Professional (32-bit) 2972 18%
Microsoft Windows XP Professional (32-bit) 2031 16%
Microsoft Windows XP Professional (32-bit) 1993 9%
Microsoft Windows XP Professional (32-bit) 2038 16%
Microsoft Windows XP Professional (32-bit) 3118 1%
Microsoft Windows XP Professional (32-bit) 2022 45%
Microsoft Windows XP Professional (32-bit) 870 1%
Microsoft Windows Server 2003, Standard Edition (64-bit) 4123 0%
Microsoft Windows Server 2003, Standard Edition (32-bit) 3025 30%
Microsoft Windows Server 2003, Standard Edition (32-bit) 2007 1%
Microsoft Windows Server 2003, Standard Edition (32-bit) 4098 1%
Microsoft Windows Server 2003, Standard Edition (64-bit) 0 0%