FYI: For those of you using 64 bit machines, needing the 3Gb switch in 32 bit XP OS for Solidworks. When the 64 Bit OS XP is released in the near(?) future you may want to hold off until SWX is 64 bit(if ever). I happened across this tid bit in Microsoft Knowledge Article 294418. The 3Gb switch is not available when running a 32 bit app in a 64 bit operating system
The 2-GB user-mode virtual memory limitation64-bit programs use a 16-terabyte tuning model (8 terabytes User and 8 terabytes Kernel). 32-bit programs still use the 4-GB tuning model (2 GB User and 2 GB Kernel). This means that 32-bit processes that run on 64-bit versions of Windows run in a 4-GB tuning model (2 GB User and 2GB Kernel). 64-bit versions of Windows do not support the use of the /3GB switch in the boot options.