Don't bother as Mikomi are absolute cr*p.
Do a search for Mikomi on this site and you'll see just how many people have problems with them.
Buy a Logitech and make life easy for yourself.
Big Softy, May 2007
That's what I would have suggested a few months back but the Mikomi web site went away.
t, April 2007
Mikomi should have Vista drivers by now so I suggest you download them, otherwise you may need to review how you are installing the USB(?) connection