update problem

[thirumuruganpoolan]

sir i have buy new laptop g7 made.this laptop is loaded with ubuntu 9.04 but i can not upgrade to latest version 11.04.it will say error like this please help me

error message:
W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/Release.gpg Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/main/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/restricted/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/universe/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic/multiverse/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/Release.gpg Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/main/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/restricted/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/universe/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-updates/multiverse/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/karmic-security/Release.gpg Could not resolve 'security.ubuntu.com'

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/karmic-security/main/i18n/Translation-en_IN.bz2 Could not resolve 'security.ubuntu.com'

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/karmic-security/restricted/i18n/Translation-en_IN.bz2 Could not resolve 'security.ubuntu.com'

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/karmic-security/universe/i18n/Translation-en_IN.bz2 Could not resolve 'security.ubuntu.com'

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/karmic-security/multiverse/i18n/Translation-en_IN.bz2 Could not resolve 'security.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-proposed/Release.gpg Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-proposed/restricted/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-proposed/main/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-proposed/multiverse/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/karmic-proposed/universe/i18n/Translation-en_IN.bz2 Could not resolve 'in.archive.ubuntu.com'

W: Failed to fetch http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu/dists/karmic/Release.gpg Could not resolve 'ppa.launchpad.net'

W: Failed to fetch http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu/dists/karmic/main/i18n/Translation-en_IN.bz2 Could not resolve 'ppa.launchpad.net'

W: Some index files failed to download, they have been ignored, or old ones used instead.