Here's a little trick I learned for Vista owner's. You can control the size of your desktop icons...
To do so:
1 close or minimize all windows
2 left click desktop
3 hold down the ctrl key
4 scroll up or down on your mouse (The scroll function on my touchpad worked fine for this)
I took some screenshots to show, but apparently I'm too much of a noob to post links, so you'll just have to see it for yourself.