We recently updated our accountants computer here at work to Win 7 64 bit so that he can run his resource intensive programs better. We also upgraded our Quickbooks yesterday to the latest versions of QB 13. The problem is now that when performing some actions he receives a not enough memory error and the action does not complete. Looking into it, Quickbooks is natively a 32 bit program which means it doesn't matter how much memory I put into the system the program will only be able to utilize up to 2 GB which is pretty paltry when you are working with a company file that is over a gig. My question is whether or not there is a simple and stable way to modify the executable to allow it to access more than 2 GB of memory. I emphasize the stable part because this is the entire company file that I am dealing with and enjoy having my head and neck attached. Any help would be greatly appreciated.