Yes, Windows server 2008 Foundation support Terminal server and it will support two administrator Remote Desktops
Please go through below information from Technet.microsoft.com
Windows Server 2008 R2 Foundation supports a maximum of 50 TS Gateway connections.
Note:
In order to access a hosted application, such as Microsoft® Office, you must acquire a Windows Server 2008 Terminal Services client access license (TS CAL) for each user account (not to exceed 15 user accounts) that uses TS Gateway to
connect to the server.