If he is using OS X, you could use the "Activity Monitor" (Applications/Utilities) and click on the System Memory tab, it shows in a basic way (pie chart), the memory used by the system, in use by apps and free unused memory. On Feb 5, 2004, at 4:52 AM, David Lambourn wrote: > Mark, > > I reckon that Keith has it right - but you might like to download a > piece of freeware, Memorystick and try it for a while. It will give > you a picture of your memory use, crude, but good enough to give you > some idea of yur memory needs while you are using your mac typically. > It can be found at: > > http://www.versiontracker.com/php/dlpage.php? > id=13636&db=mac&kind=&lnk=http%3A%2F%2Fpages.sbcglobal.net%2Fmattneub%2 > Fdownloads%2FMemoryStick1.3.1.dmg.gz