Optical Mouse  

First off, a clarification. I presume that you mean that the cursor on your screen leaps around. If your actual mouse unit is jumping then I think you might want to vacate your house or get a really aggressive cat or something. :-)

There are plenty of reasons that your cursor could be weirding out, actually. It could be as simple as you needing new batteries in the unit since it's wireless. Secondly, optical mice are very sensitive to the material upon which they sit: are you using an optical mousepad or other surface that is optical friendly?

Hmmm.... what else.... you could be seeing interference with the wireless unit. Do you have other radio or wireless units right by your computer? If you hook up a traditional wired mouse, does the cursor Exhibit the same behaviors? If you move your computer and mouse to another room, does the behavior remain?

You might also want to check the sensitivity that you have selected for your mouse in the Windows XP Control Panel area. Choose Start -> Control Panel -> Mouse then go to the Pointer Options tab and see if any of those settings affect the behavior you're seeing.

I also had the same problem with one of mouse I used. Try to install the latest driver of your mouse. You can find it on your mouse brands site i.e. microsoft i think or you can also serach for it when you got the latest driver just install it.

i not use microsoft wireless optical mouse and mouse is most inportent part of computer