for the meantime...another thing you can try doing is increasing the virtual memory on you computer...right click on my computer > properties > advanced tab > click on the performance button > go to the advanced tab here > try doubling your virtual memory here (at bottom) ... also set processor scheduling and memory usage to "programs" .

Windows will by default make the virtual memory 1.5 times you physical memory...since you only have 256 physical...the virtual might still not be enough.

Hope this helps