Hi, well I said I would do it so here it is:
http://files.filefront.com/Laymens_m.../fileinfo.html
There were too many pictures to fit here, so I decided to make a a downloadable manual in wordpad format. I tried all different ways to get here & my math skills aren't all that good so the final method I feel is about the quickest & easiest method to do the calculations. Both the "Map Update" & "WO assistance" turned off, and was still relatively easy,
now if I can do it anyone can!
Hope this is of value & if there are any problems/errors please let me know.
Cheers.
PS. If there is any other tutorial out there, like this, it is purely coincidental.