what problem are you having? what support is giving you this advice?
anyhoo... your virtual memory should ideally be set at 1.5 times the amount of RAM you have.
to access your virtual memory (assuming you are running XP):
rt click My Computer
click on Properties
click on the Advanced tab
under Performance, click the Settings button
click on on the Advanced tab in the new dialog box
Virtual Memory should be at the bottom, click on Change
Custom Size should be selected, for both Initial and Maximum Size enter "1024" (w/out quotes)
click Set, then click OK
you may have to reboot your computer.
hope this helps,