Decompile and modify a Flash (SWF 6) file

I have a Flash 6 file (CWS6/FWS6) that calls some PHP scripts to receive dynamic content. The URLs where the PHP scripts are located, are hard-coded at 4 positions in the .swf file. These need to be changed, as the IP address of the server platform has changed. Your job will be to decompile the .swf, change the URLs and compile again with Flash. You will deliver both the .fla and .swf files. My budget for this job (easy if you did it before and have the software for decompiling) is USD 25.