I'd probably buy both the PS2 and DC emulation stuff immediately
Especially the PS2 emulator. PS2 games are so cheap these days, and there are some really good games out. It'd be nice playing them through an HD setup..
Edit: Wait a minute.. They say PS2 emulator, but then say that they want to sell PS2 games over PSN. Why can't we just download an emulator and play the games we already own?