New Post: Shipping Provider Issues - Urgent

I am hoping for a bit more detail on what settings need to be included in what sections, as the links that have been mentioned (below) detail are more about using locations rather than utilsing a custom provider.

https://nbstore.codeplex.com/wikipage?title=Shipping&referringTitle=Documentation
https://nbstore.codeplex.com/discussions/227950
http:///DesktopModules/NB_Store/documentation/Documentation.html#Div4

I am looking for detail like:

Utilities/ Payment/Shipping:

1. The calcship.provider: Setting Value should be from your DLL in the directory [Drive Letter]:\DotNetNuke\bin in the format:
   [module name],NEvoWeb.Modules.NB_Store......CustomShippingProvider.[Class Name of Overidden CalcShipInterface Class]
2. The calcship.provider when configured here will overwrite built-in NB_Store shipping calculations.
3. [insert detail about the relationship between the calcship.provider and Method, By Weight, By Price, By Quantity, By Country, By Product, free limit]
   i.e are formulas inserted here applied before or after the calcship.provider (or not at all) ??
4. See detail about Track and Ship Templates in the Help Section on the Admin Page
   

I am hesitant to play with the settings, as i am trying to locate the reason it has just stopped working, so if it happens again we know what to look for...

sorry for the multiple posts, but the editor did not like the large post initially.

regards
TheTimp