dude if you want to add those new logos of yours to the pcsx2, just get the pcsx2 source (its open source anyway), exchange the default ps2 logo with your logo there, compile it then...there you go your pcsx2 has your logo but just keep it to yourself. DON"T DISTRIBUTE IT
You need a modded PS2
A PL2301 or PL2302 USB cord
Pukko's Dumpbios.elf program
And you need naplink
after you gather everything it's easy
1)connect the ps2 and your PC with the PL2301/2302 cable
2)start your PS2 with a naplink CD
3)after it's Completely booted start the PC naplink program. (it should acknowlege the connection)
4)load the dumpbios.elf program from your PC to your PS2. On the ps2 it should tell you if it was successful. If it was you should get a file bios.bin in your main root directory(c:\bios.bin). That file is the bios.
--i'd like to add. ignore those asses criticizing your artwork. For some reason they treat people like this until you've been here for a few months or even years.
http://naplink.napalm-x.com/ <- that's where the naplink cd data is. i'm not sure in what modes you burn it but you can search around the net. There's also the windows and linux client software.
The PL2301 and PL2302 are USB to USB data cords. Unfortunately you Have to use one of those. You just can't use one you got at compusa. They are fairly easy to find on the net though.
The hardest thign to do is get a modded PS2. I wouldn't recommend modding it yourself if you buy a modchip. Get a professional whos been doing it for a while. If you live in a big city ask around to other people who might have gotten their systems modded.
It's a hard truth that dumping your own bios is expensive. You can spend in the upwards of at least $100