Here are a bunch of links that will let you change your file format so you can use the maps on any type of system.
http://www.csclub.uwaterloo.ca:11068/mymc/index.html This program can import and export individual ps2 save files and put them into a .ps2 file.
Here are some blank .ps2 memory card files: http://www.mediafire.com/?9dp562ul21s4n3s