How to use remote desktop client in mountain lion

How to use remote desktop client in mountain lion.
I want to connect my other system(ubuntu) using mac remote desktop client, But i could not locate remote desktop client in moutain lion.

Did you check your Applications folder? It's there. "Remote Desktop Connection.app"

Yes. I did not see it in Application folder.

Don't know what to tell you then. It's definitely there in the Applications folder in Mountain Lion.

Not in mine ether. IMac with 10.8.1

I am sure the Remote desktop connection app is part of MS Office?

If you want to connect to the Ubuntu box (and it has a VNC system running) then add the screen sharing app to the doc
System:Library:CoreServices:Screen Sharing.app

Or download a VNC client application like Chicken of the VNC | Free software downloads at SourceForge.net

Also try TeamViewer.

I am sure the Remote desktop connection app is part of MS Office?

Click to expand...

Nope. The package contents clearly show it's an Apple application. The reason it shows up in my applications folder is it was probably carried over from Snow Leopard in the upgrade to Lion and then to Mountain Lion.