Check out FreeCommander: it allows for defining custom columns.
(Not sure if that will support SVN informations, but the alternative, xplorer2, which supports SVN, isn't free)
5 years later (2016), Andrew Jens confirms in the comments below:
I'm very new to FreeCommander (Build 716) but I can confirm that it does show the SVN folder icons for all items within the currently-selected folder (i.e. the right-hand pane of the traditional Windows Explorer window).
What it doesn't seem to do is show the SVN icons in the folder tree view (i.e. the left-hand pane of the traditional Windows Explorer window).
This observation is based on the free 32-bit version.
He adds (again May 2016):
I just bought the 64-bit "donor" version of FreeCommander (Build 720).
When it comes to SVN icon display, I can confirm that it appears to function exactly the same as the 32-bit free version ... i.e. the folders in the folder tree-view do not show the SVN icons but the files and folders (in the right pane) for a selected folder do show the SVN icons.