Remote desktop and VPN are different - RDP controls computers remotely, VPN connects to a home network. Choose a remote desktop app like TeamViewer, RustDesk, or Chrome Remote Desktop for easy access.
Microsoft has released a new Remote Desktop Protocol (RDP) client for XP SP2 and W2K3 SP1 for connecting to Vista and later Windows computers. You can get the new client here. As much as I like RDP ...