After getting my Ipod Nano g3 up and running ive put songs and some videos on it all was going very well,yesterday i tried to add more songs to it but when its syncs it just sits there syncing in Itunes (hangs) and wont stop,it doesnt say on the ipod that its syncing like it usually does?

also the ipod doesnt seem to be installed properly as everytime windows (xp w/sp2) loads up it picks up the Ipod but says that one of the filter drivers for the device is invalid,its in the devices tab but with the yellow excalmation mark? i try to update the USB drives but the wizard does not give me the option to connect to the Windows Update Website and get the files off there?

anyone got any ideas?