Hi George,

I seldom post here,
but I was jumping around today and saw this ..

so ..

memory is the correct answer .. aka RAM ..

however, it would be best to know your set up,
before any real recommendation could be made.

Erich is correct ..
go talk to a local puter shop.
take a list of your complete set up,
including the OS ..
and any other software, trading programs you have on it.

you can get a pc audit (no cost) here:

http://www.belarc.com/free_download.html

just download it, run it,
then print it.