@irix:
More info on battery replacement here:
http://qubeserver.com/Qube/projects.html
Go to the Replace your battery! link.
Great machine, glad you've got extra memory for yours (needed). Off floppies not having a CMOS battery is a pain (power on + Delete/R every time) but with upgraded machines, HDD highly recommended, non-functioning CMOS makes them nearly unusable.
Power-Up + One of the following keys:
CMOS:
Delete - resets all CMOS except econet ID
Copy - resets all CMOS except econet ID, reverse sync
R - resets all CMOS except econet, country code, number of floppy and hard discs, and expansion card info.
Monitor:
keypad 0 - select TV style display
keypad 1 - select multiscan display
keypad 2 - select hires-mono display
keypad 3 - select VGA display
keypad 4 - select SVGA display
keypad 5 - select LCD display
keypad . - select automatic display detection
keypad + or - for sync 1 or 0
T - configures seperate sync which is needed by most monitors
...unless you have a 15khz capable monitor most games will need either connection via SCART or VIDC Enhancer.