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