Thank's Alkaline, as for the metrics, I have found that using a conversion calculator makes that much easier.
(On that note I've been a little "floaty" LOL, I usually just punch in changes (numbers) and check to see what effect they have.)
Some free conversion calculators can be downloaded from:
http://www.nonags.com/nonags/calcs.html
[8D] 'CyberCalc' by Cybermetrics is very nice.
http://www.cybermetrics.com/CyberCalc/CCalc.HTM