Be aware that a 32bit operating system can only address 4Gb address space. Drives and other devices are also mapped into this memory space, which leaves only 2Gb memory RAM for all Windows XP applications. If you have a 64bit CPU (e.g. Athlon 64), you can use Windows XP64, which can address a lot more memory. Unfortunately as Vue is a 32bit application, it can still only use 2Gb RAM, but Windows XP64 provides a 32bit emulation exclusively for each application. So more than 2Gb memory only makes sense, when a.) you use a 64bit CPU and b.) you use Windows XP64 Nevertheless the benefit for Vue is quite small, as long as there is no 64bit Vue version, as for C4D or other high end 3D application.