If you change your mind, consider this inexpensive mouse, Amazon.com: Logitech LX6 Cordless Optical Mouse: Computers & Accessories
This is what I use when I work in the field printing photos from photoshop. I changed the battery last week and it had the same battery in it for over a year.
This is another one I use for my netbook. Amazon.com: Logitech Wireless Mouse M505 (Black): Computers & Accessories
It is a little smaller than the one above but has a nano receiver that you can leave plugged into the laptop.
I gave up on wired mice when I bought my first wireless back in the day, a Logitech MX1000. It lasted 2.5 years of 10 hours of use every day and Logitech replaced it no questions asked when I called them about the left click double clicking with a single click.
I still have the replacement MX1000 on my HTPC and use the G700 mouse on my main rig.
I currently own 6 Logitech wireless mice.