whoo... Alright, here goes:
The CMOS battery failure and CMOS defualts loaded means that your computer's batter is dead. You need to find the small, round, silver disc-like battery and get it replaced. Take it to the store, and find one the same size with the same voltate.
The keyboard/diskette errors:
I believe the small keyboard port you talk of is actually a PS/2 Mouse port, and the larger one is the AT keyboard port.
Once you get your keyboard working in the right port (you may need to get an AT-PS2 converter to convert from one type to another)
If you want to disable the errors, go into setup, usually del or f1 or something on startup. In setup, goto basic bios setting, and change "Halt on all errors" to "Halt on no errors" or something similar.
Visit my page, http://mp3box.2y.net