I am trying to install a "Logitech QuickCam Messenger" webcam so far without success,it starts to install, then after a while a box comes up "File Progress" then the install freezes and goes no further. Have downloaded the latest drivers ect from Logitech. Have tried installing with firewall/antivirus disabled,same result. Using Win XP Home with all updates.
Try emptying the Temp file in C:\documents and setting\user name\local settings\temp. Sometimes files left in this folder from a previous install that has failed can prevent the program being reinstalled.
I had a similar problem when I tried downloading the latest drivers. In the end I uninstalled the latest drivers by doing a system restore. I then turned off the internet connection, antivirus and firewall. Installed the software (drivers) from the disc which came with the web cam. It worked first time. Then reactivated antivirus and firewall and connected to internet. Works perfectly with Skype. Good luck.