Someone more knowledgable will step in here and correct me if I'm wrong but with 32bit Win XP each application can only access a maximum of around 2 GB.  So once you've taken out the space for the software itself running you get the amount required.  Having the other 1.5GB isn't a waste though as the OS and anything else your running can use that leaving Vue with more memory to work with.   Unfortunately  solving this will involve  upgrading your OS to a 64 bit version so it can access all of your RAM and that may require hardware upgrades too.  I can't remember if Vue 5 Infinite had 64 bit support or if that only came in with Vue 6.  Sorry not to have an easy or cheap fix.

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