while installing yum i got this errors
its a fresh installation nothing changed
help ??????????????/


root@bt:~# apt-get install yum
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libdmraid1.0.0.rc16 python-pyicu libdebian-installer4 cryptsetup libecryptfs0 reiserfsprogs rdate bogl-bterm ecryptfs-utils libdebconfclient0 dmraid
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
librpmbuild0 python-rpm python-sqlite python-sqlitecachec python-urlgrabber rpm rpm2cpio
Suggested packages:
python-sqlite-dbg alien elfutils rpm-i18n
The following NEW packages will be installed:
librpmbuild0 python-rpm python-sqlite python-sqlitecachec python-urlgrabber rpm rpm2cpio yum
0 upgraded, 8 newly installed, 0 to remove and 0 not upgraded.
Need to get 3,605kB of archives.
After this operation, 6,726kB of additional disk space will be used.
Do you want to continue [Y/n]? y
WARNING: The following packages cannot be authenticated!
librpmbuild0 python-sqlite python-urlgrabber rpm2cpio rpm python-rpm python-sqlitecachec yum
Install these packages without verification [y/N]? y
Err http://32.repository.backtrack-linux.org/ revolution/main librpmbuild0 4.7.2-1lbuild1
Something wicked happened resolving '32.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main librpmbuild0 4.7.2-1lbuild1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main python-urlgrabber 3.1.0-5ubuntu1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main yum 3.2.25-1ubuntu2
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main python-sqlite 1.0.1-7ubuntu1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main rpm2cpio 4.7.2-1lbuild1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main rpm 4.7.2-1lbuild1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main python-rpm 4.7.2-1lbuild1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Err http://updates.repository.backtrack-linux.org/ revolution/main python-sqlitecachec 1.1.2-1ubuntu1
Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...uild1_i386.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...untu1_i386.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...buntu1_all.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...uild1_i386.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...uild1_i386.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...uild1_i386.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...untu1_i386.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
Failed to fetch http://updates.repository.backtrack-...buntu2_all.deb Something wicked happened resolving 'updates.repository.backtrack-linux.org:http' (-5 - No address associated with hostname)
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?






please help what should i do i m very new to this .......................



source list(/etc/apt)

deb http://all.repository.backtrack-linux.org revolution main microverse non-free testing
deb http://32.repository.backtrack-linux.org revolution main microverse non-free testing
deb http://source.repository.backtrack-linux.org revolution main microverse non-free testing
deb http://updates.repository.backtrack-linux.org/ revolution main microverse non-free testing