1. Ditch Cassini. It's not worth your time. 2. If you are going to ask "Why?" in regards to 1., don't. It's not worth a reply. 3. I urge you to give SSF a go. It is worth your time. 4. If your processor doesn't support SSE2 instructions, SSF won't work. It is still worth more than Cassini, regardless. 5. If 4. rings true, use Yabause. It is worth less than SSF but still worth more than Cassini. 6. When in doubt, refer to points 3., 4., and 5.