If you get a "not enough memory", "out of memory", "low memory" or a similar type of RAM error in a Windows Vista or Win7 application...
Windows Vista and Windows 7 no longer use the BOOT.INI file, so there is a different method for setting the "3GB" switch which enables to use 3GB of RAM for applications in 32-bit Windows (otherwise they use just 2GB - maximum).
If you want to make accessible 3GB RAM for your CAD applications in Vista/Win7, use the BCDedit.exe tool (Boot Configuration Data Editor). The 3GB memory mode can be enabled with the command:
bcdedit /set IncreaseUserVa 3072
and disabled by the command:
bcdedit /deletevalue IncreaseUserVa
Run this command from a command window with Administrator priviledge - i.e. (in the Start menu) type CMD and press Ctrl+Shift+Enter, or select "Command Prompt" (Accessories), right-click on it and choose "Run as Administrator".
Restart your PC after this change.
CAD Studio recommends using 64-bit versions of OS and CAD software to solve RAM problems.