Like i say i think you are correct with ripping there store xml files and placing them on your server and editing them on your server but i would be focusing on the image path rather than anything...
And further more what i meant by You might not be entering the url in the proper format for there system to recognize is were u place the u="" in the link maybe you don't need a full url like maybe...
Not necessary because there is always more then one hole in game store purchase methods, You just need to look deep enough to find them and i know there will be more then one way to get items from...
I just think you are jumping in without checking easier solutions first i think you are correct about ripping there xml data and i think you are right about downloading there swf files i just don't...
You might not be entering the url in the proper format for there system to recognize thats why it probable doesn't work im guessing you want the finished product to look something like this...
I suggest you look closer to the u="" rather then anything else and the image locations themselves and maybe replace with a new image on the games server rather then using the cURL function.
I f you provided these "important" highlights sooner you might of had a finished product by now, like if you post a thread the people on this site are going to need sample code of the xml php and w/e...
And further more i noticed we wont be able to see into the store xml unless we play zwinky and are currently logged in so maybe an example of the xml file would make people understand this thread...