We all know what a mess your pc can be ... you're looking for a file, that's somewhere and you can't find it. I've searched over the internet for a program like this (and which i couldn't find, so i request it here

):
A program which is basically a explorer, but with the abillity to add a virtual treenode. Why? With such a program, you can store all your files by type (for example: all doc's in /docs, all xls in /xls etx). The "program" can add to each file a label (eg in a xml db or something) or labels. So you get an explorer like window like this:
+ by type (the physical tree, so is it on the HDD)
| - /docs
| - /xls
+ by subject (virtual tree)
| - /car
| - /work
etc
foobar1.doc and foobar2.doc are stored in /docs, but foobar1 is labeled as
car and foobar2 as work. foobar3.xls is in /xls and labeled as car.
Clicking on the different node's will result in something like:
+ by type
| - /docs [foobar1.doc and foobar2.doc]
| - /xls [foobar3.xls]
+ by subject
| - /car [foobar1.doc and foobar3.xls
| - /work [foobar2.doc]
etc