A bios plugin? I don't know what you're talking about. What do you have in mind?
BTW there are a few more bios than those 7 that were mentioned? The best ones to use are Scph1001 and scph 7502. Those are the ones recommended by the ePSXe team. Some people have gotten good results out of scph7000 and dtlh3002 though. Basically if you have one of the recommended bios then you don't need to worry about it. Your LOD solution lies elsewhere.
BTW there are a few more bios than those 7 that were mentioned? The best ones to use are Scph1001 and scph 7502. Those are the ones recommended by the ePSXe team. Some people have gotten good results out of scph7000 and dtlh3002 though. Basically if you have one of the recommended bios then you don't need to worry about it. Your LOD solution lies elsewhere.