ok. So, I downloaded virtua tennis 3 , and the game was composed by a folder and some psp files( not in format zip or rar, just simple files, 001, 002, 003 this was their name).I compressed the with winrar in rar format.Then, I opened the archive, then, I clicked view file at the first psp file. ia appeared the ISO file.It had 580 Mb.I clicked extract to: bla bla bla.... when extracting the file, an error occured. the error was like that: You need to have the following volume to continue ecxtraction: blalblalbl. I am sure that I copiyed all the PSP files, so why it appears that error?