I need to access to a Mac running OS X Lion remotely from a Mac running OS X Leopard and Windows.
Is there any software to do that?
Set up VNC on mac and this will solve your problem. VNC stands for virtual network computing and provide acess to remote computer. Here is a detailed guide.
First, you have to enable remote management and screen sharing in Mac OS X Lion (It enables some sort of VNC Server).
From my Mac Leopard: Finder > Go to > Connect To Server. Type:
It will prompt you to type the remote Mac OS X login/password and then launch a screen sharing application. From Windows you can use a VNC client.