Sure. How you do it depends on which direction you want to go. The built-in Mac screen sharing function is both a VNC server and a VNC client. So you are set on that end.
On the PC side, I'm not sure what is available in Windows 7. You'd have to ask a Windows 7 expert that. Perhaps it has built-in VNC too? If not, then download a VNC client and/or server. In the Windows XP days I remember using "Tight VNC" for this.
Sure. How you do it depends on which direction you want to go. The built-in Mac screen sharing function is both a VNC server and a VNC client. So you are set on that end.
On the PC side, I'm not sure what is available in Windows 7. You'd have to ask a Windows 7 expert that. Perhaps it has built-in VNC too? If not, then download a VNC client and/or server. In the Windows XP days I remember using "Tight VNC" for this.