I'm trying to use Excel 2008 (I wish I still had my old 2004 CD with me) to do some plotting and it's near impossible. I'm plotting spectrum data off of an optical spectrum analyzer, so we're talking some 3000 data points. I select the data, create a chart (annoying as hell in itself) and once the chart shows up I can't do anything without at least a 10-20second wait, I can't select an axis, move the chart, rename it or anything. Why is this so slow and is there anything I can do to speed things up?? Oh, and doing such plotting using an old school Excel on an old computer running Windows 2000 was no problem at all.