Having trouble running PS1 ISOs

Last night I downloaded Tekken 3 online. I had no idea it actually came with the ePSXe emulator. Then I downloaded some ISOs (which are rar files), but when I use the program, they don’t show (I put them in the ISO folder). Is there something I’m doing wrong?

In before locked thread.

Welcome to the jungle baby!

Yes. Posting about it here.