My iMac has decided to stop talking to its bluetooth mouse. I'm fairly certain it's a trivial case of re-pairing them, but i don't have a USB mouse to plug into it!

Can anybody tell me how I can get into the relevant system prefs to switch on Mouse Keys using just the keyboard? I've tried and I cannot for the life of me figure out the logic behind the function of the various keys!!

Hi mate

Go for 'Command' (cmd) + 'Space' to open spotlight - then type bluetooth

As above