Thanks Andrew and Tristan. My macbook has 1 gig of  RAM so the OS and VM would get 512 each. I plan on upgrading to at least 2GB one of these days, but hopefully 4 GB. I'm only going to use VirtualBox for a client so far. I need to run Windows on my laptop for school. Joe <div class="gmail_quote">On Jan 21, 2008 12:54 PM, Tristan Rhodes <<a href="mailto:tristan.rhodes@gmail.com">tristan.rhodes@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> 512 MB of RAM is sketchy for ANY virtualized system.  You have to share that memory between two operating systems, so if you split it evenly then the host and guest OS each get 256 MB. This will work on some operating systems, but don't expect great performance. I like VirtualBox for everything except that it has a complicated setup to get bridged networking configured.  The default NAT networking works fine for outgoing traffic, but if you want to host a server then you need bridged networking.  It is possible, but not easy to setup. </blockquote></div>