Create Tree from list of files

[Zvonko]

I have a list of files like that:

c:\folder1\file.txt
c:\folder1\file2.txt
c:\folder1\file3.txt
c:\folder1\file4.txt
c:\folder1\subfolder\file.txt
c:\folder1\subfolder\file1.txt
c:\folder1\subfolder\file2.txt
c:\folder1\subfolder\file3.txt
c:\folder1\subfolder\test\file.txt
c:\folder1\subfolder\test\file1.txt
c:\folder1\subfolder\test\file2.txt
c:\folder2\file.txt
c:\folder2\subfolder\file.txt

AND SO ON

Can someone tell me any possible way to make a tree out of that data?