Not sure, never worked with 64-bit Windows yet. It's documented on Metalink but I don't have the note handy right now. I'm not familiar with hugemem - never worked on Linux (I work mostly on AIX & HPUX), but basically the /3G flag just tells Windows to make 3GB of RAM available for all applications/users running on the machine, instead of the default behavior of hogging 2GB for the OS and only giving 2GB to the users & apps. I think you might get some hits if you search for 4GT as I've seen it referred to by that name before (Short for "4GB Tuning", I think). Regards, Brandon ________________________________ From: William Wagman [mailto:wjwagman@xxxxxxxxxxx] Does this hold true for 64-bit Windows as well? Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.