Hi guys...it's been a while... [:)]
popmann, if you're able to load both of those pianos with the 3GB switch turned on, I would bet that you have a separate graphics card in that machine which uses its own memory...? On the tests I've made with the /3GB switch on machines with shared memory for the graphics driver I couldn't load much before GS choked.
Regarding the rumor that the /3GB switch wouldn't work with XP Home...it's false nowadays. If I remember correctly the support for 3GB in Home Edition came with an update, maybe SP1.
/Mattias