Won't be a problem. Just get an Ethernet CROSSOVER Cable... make sure it's a crossover and not a patch cable... and hook 'em up. It's been a while since I've shared to an OS9 machine, but basically all you have to do is:
To Enable sharing in OS9:
1) Activate AppleTalk in Apple Menu > Chooser
2) Tell AppleTalk to connect via Ethernet in Apple Menu > AppleTalk
3) Enable file sharing on OS9 in Control Panels > File Sharing (click START)
To Enable sharing in OSX
1) Go to System Prefs > Network and select "Built-In Ethernet" from the "Show" drop down menu.
2) Active AppleTalk in AppleTalk Tab
3) Enable file sharing on OSX in System Prefs > Sharing (check PERSONAL FILE SHARING)
To Connect to OS9 machine from OSX machine:
1) Go to Go Menu > Connect to Server
2) Select whatever you named the OS9 machine (in File Sharing Control Panel)
3) Enter name and password (if any) as it is written in the OS9 File Sharing Control Panel.
That's about all there is to it. The OS9's hard drive will mount on your desktop.
More
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