When using CoRD to RDP to a Windows 7 machine from a Macbook Air running OS-X 10.6.8 (Snow Leopard), I was having trouble with the mouse cursor disappearing after starting any email edits with Microsoft Outlook on the remote Windows 7 machine. Turns out this is a Windows feature where the mouse cursor is hidden whenever in a editing window. There are settings in the Mouse control panel to remove this default behavior: Control Panel > Hardware and Sound > Mouse (dialog) > Pointer Options (tab) > “Hide pointer while typing” (checkbox). My problem was that the mouse pointer would disappear and stay disappeared for that session. Turns on there is a setting already to fix this — if you press the “Control” key and then move the mouse, the cursor reappears. Also clicking the mouse button once while still editing brings the cursor back temporarily (until you start editing again).