When you first enter the mansion look to the left and you'll see a note on the floor. Follow the clues to get the combination to the safe on the second floor. Becareful though it leads to a VERY strong boss fight so save first. You'll get a key from the safe which opens a door in the basement.
If you want more info let me know, I didn't want to spoil too much for you --- Smoke me a kipper, I'll be back for breakfast!® 8/14/2000 1:01:49 PM
The combination is right 36, left 10, right 59 and right 97. Don't go past any of the numbers and do it within the time-limit (don't rush its pretty easy) and the safe will open. Beat the boss and use the key to open the door before the lab in the basement.
Talk to him about Sephiroth then again and ask his name. He joins you on the way out. --- Smoke me a kipper, I'll be back for breakfast!® 8/14/2000 1:01:49 PM
Note that the last 2 numbers in the combination are both right. Which means you turn the dial to the right until you reach the first number, then left to the 2nd number, right to the 3rd number, and then right again to the 4th number.
Also keep in mind that if you go past any of the numbers you automatically fail, and when you do reach the correct number you need to hit the confirm button in order to enter it. If you changed your button configuration, you may need to set it back to the default settings (some parts of the game don't work if you're not on the default setup, such as moving chocobos into stables). --- [/rant] No, I'm just genetically predisposed to awesomeness. ~fidormula
Once you open the safe, watch out with the boss, if you face it in your first visit to nibelheim (not counting the flashback) this boss can hit very hard with either magic or physical attacks and it can be hard against physical or magic attacks, but it can be stopped, you could use attacks that can do the job like chocomog or cross slash. One good idea is to bring a tank and a magic tank and Aeris for the healing or use of fury brand if you have that limit. I think time materia paired with added effect in your weapon can also inflict stop to it. --- I'm the leading man. You know what they say about the leading man? He never dies.