I use a supplier who dropships for me and I need to setup the shipping to reflect what they have.

Up to 2kg of Goods:-
Royal Mail Tracker Super Saver Delivery (2 - 3 working days) £4.50
Royal Mail First Class Recorded Delivery (1 - 3 working days) £5.50
Royal Mail Overnight Delivery (1 working day) £8.95

Up to 15kg of Goods:-
Parcel Force Overnight Courier (1 working day) £7.50

How do I go about setting this up? I'm really confused with all the different shipping modules etc