Here's the scenario, in Excel 2007 (of course)I have a sheet with 365
rows, 253 columns. I have a macro that's going to build a chart based
on SOME of those columns. My code says

Set oActChart = Charts.Add

Used to work just fine in Excel 2003, now it takes 2.5 minutes and
sucks up half a gig of memory, because it thinks I want to chart
everything on the data sheet. I can get around this by selecting a
small range on the data sheet, but I'd far prefer to be able to tell
Excel not to try to anticipate what I want to do. Is there any simple
way - other than that above - to do this?