Help for web cam drivers logitech quickcam

Hello,
Hello,
i dont have a software for my logitech webcam and als dont have its box where i can find its model no and details...however i found his tag on the webcam wire which may help u .following are the details.
M/N: V-UM14
P/N: 861092-0020
S/N: LNA43013184
KINDLY SEND ME A LINK OR SOMETHING AND ALSO INSTRUCT ME HOW TO INSTALL THIS SOFTWARE.
last time i inslat from this web link but know not instaled from this one bcoz know i have window 7
ftp://ftp.logitech.com/pub/techsupport/quickcam/qc848enu.exe