Remote Desktop Connection Client 1.0.1 for Mac allows you to connect to a Windows-based computer and work with programs and files on that computer from your Macintosh computer. To connect to a Windows-based computer, you need network access and permissions to connect to the computer, and the computer must be running Terminal Services or Remote Desktop Services. The following Windows products support Remote Desktop connections:
– Windows XP Professional
– Windows Server 2003
– Windows 2000 Server
– Windows 2000 Advanced Server
– Windows 2000 Datacenter Server
– Windows NT Server 4.0, Terminal Server Edition
Note: If you have a Macintosh computer with dual processors, you must have Mac OS X version 10.2.3 or later installed on your computer to use Remote Desktop Connection Client for Mac.
More info and download link here.