Instructions?

[Cubeman]

I've just received today (way to go wifey!) one of the BWI 4 stage RO/DI systems. Up to this point I've been buying my water and have never owned an RO/DI unit before so I really am clueless as to what I should be doing. There are no instructions with the system and the BWI website appears down so I'm left scratching my head a little bit here; any advice, instructions or links would be appreciated.

thanks
/Paul