Okay so...
I downloaded the BA3GS files from emuparadise, but somehow my pcsx2 ?configurationhelper? (sorry got it in german) or something like that wont recognize the files. I put them in a folder and selected this folder to search in. Now I might changed something accidently and my Battle Assault file is now an .img () Is it right or wrong? and what does it normally have to be ?

When I refresh this list, nothing happens.

So who can help me?

There are also 2 files: Battle Assault ft Gundam Seed.bin and Battle Assault ft Gundam Seed.iso (<- changed File)
I watched some Videos but they didn't helped me with my Problem.

(Windows 7)