Owbist, "However for the younger set who seem to like sitting cross legged it might be an advantage when propped across the knees." Thank you. That's the kindest thing you could have said to me. :) My normal position at this big computer desk is chair pushed back, legs crossed with my feet up on the left corner, and the wired keyboard on my lap. The wired mouse sits on the partially drawn out tray drawer. Fortunately the design of the tray drawer prohibits wires from tangling. And here all the time I was wondering how I was going to feel about turning 60 this year. :) DA

Grandms, (expanding what Mikie said...) Try shutting down the computer. Unplug your keyboard and mouse, and then plug in the wireless pick-up(s) for the new keyboard and mouse. Turn on your new equipment and turn on the computer. All should be well. You don't ordinarily need to use the installation CD. It usually just has a bunch of junk on it anyway. Hope this helps.. txKen

I find that battery life depends on my usage of the mouse. Some of the online games require extended periods of holding down the button which will use up the batteries more quickly. Doing a lot of scrolling during searches could also use the battery life more quickly. I started turning my mouse off when I'm not using it. I can't tell if that has helped or not, but I'm pretending it has.

When I replaced my mouse a couple of years ago, I kept it simple and went with a MicroSoft optical mouse, full size, with tail (cord) - no batteries, no fuss. it has a scroll Wheel and one side button. I use the scroll wheel a lot; don't use the side button. I did not install the driver tht came with it, but used the generic driver that was already in Windows. that way, the side button does not work and I don't get bothered with accidentals clicks on it. Anytime I want to activate it, I'll install the driver. It has served me well. I've clicked the left button so often that the finish on the plastic has worn off. The optical sensor has no moving parts and rarely wears out. The wear out items are the button switches. The sensor on this mouse will work on my pant leg and many other surfaces. Optical mice works best on surfaces that have an even, finely spaced pattern. I am finding that the regular mouse pad made by Allsop works well. In the bag with my laptop, I have a minature version of an optical mouse. It works, but after many years using a full size mouse, I find it ackward and revert to the standard mouse (also stored in the bag).