I am new in networking. There is my problem:

I am using 2( I-mac). One is a G OS 10.5.8 and the other is a 3.33 GHz Intel Core 2 Duo 10.6.2.

I created a local network through a wireless Lynksys router.

On each computer I selected (share files) on the preferences.

I am able to connect to my new computer from my old one but I cant connect to my old from my new computer. When I try to connect to my old, I have this message: It's possible that the G server doesn't exist or is not available. Verify the name or the IP address of the server of your local network and try again.

Is somebody there who can help me.