Windows 7: Win 7 resize icon in List View

Hi
This is my first post so Hi to all
Sorry for my english terrible, i m from italy

The question, I have start to use Win 7 but i have a problem, the icon in explorer are too small. I want use the List Visualization but the icon are very small
There is a trick for have big icons? please

Do you want to have bigger icons and still have the view in list form?

If you want to keep it in list view, click on the "change your view button" inside of a folder and click "tiles". This will maintain the list format, with bigger icons. Here's a picture:

thank's but in this case the icons are to big. There is a string in the regedit for edit the dimension of the icons?

up
I m looking for a trick for bigger the icons in List Visualization.
Thank's

up please