I am having an error that happens frequently when opening a workbook.  It
says "Excel cannot complete this task with available resources".  It also
happens at other times.  

I have seen this happen at other times as well, but it happens most
frequently on workbook open.  It happens most when the computer has just come
back from the screen saver or having been locked (or both).  

I am working in Excel 2007 on a machine with 2 GB of RAM and 4096MB of
virtual memory.  There are plenty of available resources when I check the mem
usage in task manager.  

The information I've read about this error doesn't seem to relate to it.  I
am not using named ranges, nested names, or an older version of Excel.  

After closing the error message and a secondary one which has code 101648
after I hit "CTRL+SHIFT+I", the screen becomes messed up.  The application
toolbar and parts of the screen "ghost" onto other screens.  I then have to
drag another window across them to get them to redraw.  Excel has to be
restarted.  It doesn't appear to be related to how long my computer's been
on.  Remote Desktop also seems to impact my base machine sometimes causing
this.  

Any help is appreciated.