Linux fstab file

I have tried to create a mount point in which i can view the files on my Secondary Hard Drive Master. I made the mistake at trying to guess the fs type bad bad bad... anyways now my linux does not boot up but it does give me the option to enter root password and then i can edit my fstab file. Here is my problem. The only Editor I can use is VI and I don't know how to save and exit after I delete the line I need to in the fstab file. So can anyone
a) tell me how to correctly delete the line in VI
b) Save the file after i delete the line in VI
c) by chance know the correct file type for WIN95

I would not ask all these question but I had put my books in storage and do not have any resources on hand.
TIA