If no joy from Stuartli link,i found the only way to install the 330 modem was to make this the first usb device installed.I also had many problems,but got it to work eventually. Hopefully the link above will sort this for you.
Thankyou for the link,ive been checking for the new driver but not for a couple of days.Though im a little sceptical of trying it out as everything is ok with my 330. You know what they say...if it aint broken !!
Cheers for the link,nice to know its there,just incase.