Windows Explorer - tree view (left side)

Is it possible to change the size of tree view icons from 16 to at least 24??
100% dpi show 16x16
125% dpi show 20x20 but icon 24 (if 20 does not exist)
150% dpi show 24x24 this is good but
everything looks very big.
Interesting thing is if I re size the fonts in 150% dpi to be like on 100% dpi the icons also change to 16x16.
W. Explorer can be replaced by another program but what for other software that also uses tree view?
I'm on 1920x1200 24" do I need to use smaller monitor with smaller resolution for bigger icons or very big monitor that 150% looks small or there is some reshack to some file that can be done??
In Xp registry:
Shell Small Icon Size = 24
And job is done.

So if anybody knows what file needs to be edited let me know if U know