Would anyone happen to have any recommendations for software supporting Keyboard and Mouse sharing with a MacOS 9.2 system? I'm beginning to think the concept wasn't a reality until OS X entered the scene.

My goal is to pair a PowerBook G4 running 9.2 with a modern-ish Mac mini Intel on the same desk. So far I've been able to achieve the idea with VNC, but the lag is considerable. If KM sharing isn't possible with OS 9 then I'm thinking a physical USB switch will be the most practical solution.

Thank you in advance for any feedback/suggestions.

Any network solution will have lag. There is VNC, Timbuktu and a few others I'm forgetting. Since they both have USB a cheap USB KVM type switch would be the best bang for your buck and have no lag.