it is indeed the best way to do so, christian. You have to parse your data into a xml document, and than load the document through flash, using the XML functions. there's also something like XMLSocket, but you wont be needing that.
there's a second way as well: you display the data you want to send to flash in the webbrowser, and then use the sendAndLoad functions (loadVars) to get that data. i've written a basic example in 1 of the posts in this forum.
click here
Greetz,
UnrealEd