At the moment Im using wisecalc (for some insane reason this program takes 5 seconds to startup, about the same time as openoffice calc takes!!!) but Im looking for something better. eg one that remembers all data when I close it automatically, and has various tab sheets, nice numbering formating (eg a comma seperating every thousand if I desire, trim following zeros') etc ta zed

I don't think this is exactly what you're looking for but...

I made a calculator that opens REALLY fast (so that's at least one thing you wanted). It basically just evaluates any expression you type into it, and it graphs and does calculus too. Get it here if you're interested.

It allows you to create variables, but it doesn't save them upon exit. Also, the number formatting isn't "nice" - numbers usually have trailing zeroes after the decimal point.

Anyway, I use it all the time for quick calculations. I find it to be quite handy.

sorry about not replying hung over for the first time in years yesterday, must of been the champagne.
cheers for that, nice on but not really what I was looking for