Well the only way to use PCSX2 is to rip your own BIOS from your own PS2, if you don't have a PS2 to begin with, you couldn't have ripped your own BIOS, therefore you probally pirated the BIOS illegally on the internet.
Infact you just said you tried multiple BIOS. At most, the majority of people will usually only have access to one, from the PS2 they own, some people may have multiple PS2's (importing, etc) so they have have more than one BIOS to try.
Overall your posts betray the fact that you most likely committed one or more illegal acts (so please explain how you own a Disgaea ISO if you don't even own a PS2
).
The emulation scene already skirts close enough to clearly defined copyright laws and principles, and it's the hard work of the community ensuring that these borders are respected. If you want to play some free games and leech of others, to hell with the law, I'd advise you to find some torrent group and make yourself home. =)