help needed

my mate has just came around with this masive box called replay box i dont know much about them can someone tell me whats needed to get the box back to like and where i can fine it i downloaded a tut andYou’ll need a null modem lead and 2 pieces of software "STB link (client) and the RAY image (ver738 is current). says that i need
where can i fins the sbt link looked in the download section and couldent see it i downloaded the image file and when i tryed to unrar it it said that it was damaged dont know if its windows vista any help will b apreciated
cheers dannyboy

have a look at receiver downloads all replay stuff in there

ive already been in there as i said b4 i cant open the file.....i dont know if its just windows vista

there is a new version of software out now 751 it might be in dowmloads if not pm me and i send it to you as for opening files vista is a pain in the a** you might need xp