Whunter has a thread entitled "biobor and how to use it" here
Also, your going to want to change all your filters. You may opt to drain your tank and lines and fill them with fresh fuel, depending on how bad your fungus problems are.

Before you even try to start the car you should change the oil, and squirt a little lubricant into each glow plug hole so that you dont mess up your piston rings. Also, top off the coolant. Make sure your battery is up, and your glow plugs are working, and crank away.

After you get it running you will want to run a can (or two) of diesel purge through the system (search on diesel purge.)

Also, the search feature on this forum is an invaluable tool.. Welcome...