If your getting an out of memory message .. have you checked if the windows paging file has beens et manually ..
if it has and your doing several tings at the same time and particular with gutsy programs and large images the paging file might be filling up.
depending on the amount of ram and the size of the hdd you have you can manually increase it .. or if you got quite a bit of space left on the hdd why not set it to allow windows to manage it.
that way if the file starts to fill up windows will take some of the free space on your drive to increase the virtual memory .. that way it doesn't fill up and block you
can check it here:-
right click My Computer > select properties
On system Properties click the advance tab
under Performance click on settings
Click on advance (2nd tab in )
under virtual memory click change
from here you can increase / decrease the virtual memory or select system manage size then select set
ok everything from there and hope for no more out of memory messages
just a thought