hiring someone to set flat rate and USPS settings

[mmreed]

I have been struggling to get the shipping set up how I want.

I want:

within the US - a flat rate of 4.75 shipping (using carrier of my choice)
outside the US - based rates on USPS parcel post

I can provide the login to my store and pay your fee via paypal.

Can someone help me?

I can afford a small modest fee - for a prestashop [spam-filter] this should be something quick.