If you have a Comcast Internet connection, you can set up your computer to be available for remote access sessions using a native Windows utility. Once set up, this allows you to connect to remote computers using your Internet connection.
A stroma is the connective, part of a cell, organ or tissue. The  function of a stroma is to hold the cell, organ, or tissue together  and help it maintain form. Edit.
Grana is part of the thykaloid. Each stack of thykaloid (the individual disks) are called grana. Cristae are those twisted, curving-shaped inner membranes in mitochondria where cellular respiration occur. Vacuoles stores food, waste, etc. Stroma is the fluid-like part in the chloroplast. Thykaloid is contained in the stroma.