mount XFS partitions

[dwalerXIII]

I installed Kubuntu 7.04 and LinuxMce 7.04. on a EXT3 partition and I have 2 partitions formatted in de XFS filesystem that I made under Ubuntu for use with MythTV.
These 2 partitions are full of recordings and video's.

Now I can't access these XFS partitions (are not mountable) because XFS is not installed with Kubuntu. How can I make XFS partitions recognizable?
With the installation of LinuxMce Aptitude is not usable anymore and the package is not in the list of LinuxMce.

[webpaul1]

Aptitude should still be usable.  It's not recommended to do an apt-get upgrade, since that will upgrade kernel modules that may be incompatible, and linuxmce will update them.  But apt-get install should work fine.