InternetSecure on MSv1.2 store

[Guest]

I am wanting to get internet secure up and going for my site. I've installed the basic contribution - but as already know it doesn't account for attributes - and that worked fine.

 

Then I installed the contribution to fix the attribute problem (so it will send additional pricing for the attributes to the internet secure site and add it to the total)

 

However, this doesn't work, and I suspect it is because the code is set to MS2.2 instead of my older version. I think I need to make it link to the appropriate classes etc to my version.

 

My question is, does anyone which file lists all the classes and codes for how oscommerce sees each factor: price, attribute, product model, etc - so that I can compare mine listing to the code I need to edit??

 

I've done well getting this store going without a lot of knowledge of php, and I've been learning all along, but this one has me stumped. Any help would be appreciated.