[BioC] affy memory size and Windows

[Virginia Marks]

Hello, I am trying to use the affy package in R on Windows XP (HE), and
cannot load 21 yeast cel files (I have successfully loaded 12 cel files)
without receiving the message "cannot allocate vector of size 46783Kb".  I
have tried to increase the virtual memory in windows, and have added the
command line in the target frame (--max-mem-size).  I am using a computer
with 512 RAM, and don't know what to try next.  Any suggestions?
Thank you
Virginia Marks