768 is too low for absolutely every user if you want to disable expansion... that's why he should go higher, unless you have no room left on your hd, and then the absolute best setiing is the sysem managed pagefile, as the os will give you whatever it can, according to hardrive space and need.
I'm doubting though that you are maxing the pagefile at 768, so you should notice no improvement in performance by increasing the size of it, still,
for you, the best solution is to set the minimum at 768, and the maximum at about 4x ram....though if you are not using ram intensive programs, you can lower the initial minimum to 512...no less then that for the amount of ram you are carrying... make sure you set the max to about 4x ram, (the actual figure is 3x 1.5 ram)...then you should be set...now, you could set the max to more, mine is set to 4096)...as this will do nothing either way, but do not set it to less, as that could possibly hurt perfornmance in extreme cases
this way, if you do need a bigger pagefile, the OS will accommodate you
here's how to do it;
hit the windows key+break, advanced, perfomance, settinigs..., advanced, virtual memory...go from there
I'm going to point something out here, as there is alot of missinformation concerning microsofts recomendations on this...you will hear from alot of people that 1.5 is the recommended size.
THIS IS ABSOLUTELY INCORRECT, AND NOT TRUE.
microsoft recomends an INITIAL MINIMUM TO BE NO LESS THEN 1.5...HIGHER FOR POWER USERS, WITH EXPANSION ALLOWED TO 3X THAT FIGURE...anyone that recomends less is giving you a recomendation that is below what ms says is the absolute minimum...if you are being told to dissable expansion, you are being told damaging information, that can not possibly help any user whatsoever, and will definately slow some users down.