i'm trying to update my pc using smart package manager i keep getting these errors

Failed acquiring release file for 'suse linux Online Updates':
ftp://ftp.suse.com/pub/suse/update/1...ta/repomd.xml: Temporary failure in name resolution

no matter wat sources i try andput in smart i get this error

also i'm using a proxy tunneller i've got konqueror working where do i enter the proxy settings for smart thanx