Just getting started here folks so pardon me if this is a lame question or has been asked before.

Trying to cover shipping with as much choice to the customer as possible, and I would like to know if;

If I took the modules from ParcelForce_v2.3.7 and big_royalmail_v2.3.8 that covered the UK and GB and added them into the relevant includes forlders I would esentially be creating a bespoke shipping mod for my site, of course with updated costings for the postage and shipping.

As the creator of these two mods states that they do not change any core files or PHP coding this should work as I hope...hope...hope un controlably.

Man I am either about to screw it (again) or this could workout quite well, no one hold their breath but did I even ask a question then... If I jamb it all together not knowing what I am doing will it work.