I have a laptop. Asus A1000 and i have attached on it's ps2 port a ps2 mouse, optical with scroll. .. The scroll doesn't work. if i scroll on a web page up or down, nothing happens. The mouse is working just fine on a desktop PC, but on my laptop no..
If you are running windows 2000 or xp, or most any linux, your scroll wheel should work fine on your laptop. If it doesn't there's something wrong, windows should find it fine, linux might need to be configured to recognize the scroll wheel,.