Newcomer to emulation,needing help to get a PSP game to work.

[GeneralRedPanda]

Hi there,I've just started using emulators this week,and have been having plenty of fun.
However I have run into an issue with the Valkyria Chronicles 2.
I try running it through ppsspp and it keeps telling me the game is compressed,and needs extracting despite me already extracting the files.
When I look into the folder for the game, all I have are a bunch of win-rar archive files called b-vc2u.
As stated early I just started emulating,so I have no idea what I can do to remedy this problem,if anyone could help me out it would be greatly appreciated.
Thank you and have a wonderful day!

[Warrior]

That is a split archive, you need 7zip to extract the iso.

[GeneralRedPanda]

Thank you so much for the help,that seemed to work!

[Warrior]

Thank you so much for the help,that seemed to work!

The more you know.