OK,
lets start from the begining...
after i reinstalled my PC, i had to install a bunch of drivers.
one of them was for my Web-cam.
so, i connected the camera, clicked on the windows auto install,
but the damn windows won't recognize the camera.

So, i tried to google the drivers, but no luck there.
Apparently, there is no such company named Quantum (well, there is, but it does not do web-cams)
I decided to go extreme on this one.
for this "critical mission" i needed :
- 1 leatherman

- 1 canon Digital camera

first i opened the little Web-Cam to see what is inside.

found some board connected with a cable.
on the back of the board i found a chip with some data printed on him.
because it was so small, i couldn't see the printing, so i used my camera for this task.

but seems someone wanted to erase that model (is Quantum not the real company behind this camera ?)
after thinking a little bit, i took another shoot of this chip, but with a different angle.

this photo revealed important info :
the company that made this chip is : Sonix
The chip model is : sn9c101
so, fast as a lightning, i googled up their site and went for the drivers section for the product.

but the drivers didn't work for me... (Why ???)
i started to look for more data on this hardware...
a closer look on this board gave me some more interesting data :

the board model is : DC-2110A
googling again for this model gave me a direct link for the drivers (god knows who made them...)
the drivers and the board made by "Chicony Electronics"
this is their download page :
http://www.chicony.com.tw/download/di/driver.asp
so installing them for the second time went smoothly.

after assembling back the camera, it is once again usable :)
update :
after browsing the company site, i discovered they do have a camera for that model
http://www.chicony.com.tw/products/PCC/pandaCIF.htm
but no relations to quantum what so ever.
Did someone got their product and changed its name to sell better ?