Yes.
AFAIK there isn't a way to write the data to the card other than using the dedicated card reader and the card has to be in the 430 to use it.
The only easy option I can think of is if there is a flight school or local owner there who uses 430s? I am 99.9% sure that the same reader works with both WAAS and non-WAAS cards.
Beyond that, I think you are looking at finding someone here or in the US who has a reader and can source spare cards and load and send them to you. One possibility might be Alec at RGV who might possibly have cards available.
I used to have two sets of cards for my 430s but gave them away when I upgraded my 430, but it's not impossible that someone here might have a similar set up and be willing to help.
Not much help I'm afraid, but the best I can think of.....
