If you have a ZTE dongle from 3 and your Windows 8 computer refuses to use it, uninstall the software and go here for the updated version: http://support.three.co.uk/srvs/cgi-bin/webisapi.dll?command=new,kb=mobile,ts=mobile,t=article,varset_cat=mobilebroadband,varset_subcat=3884,case=obj(6730),varset_username=Mobile:mobileUser&s_search=helpsearch