lvm2 help - adding a 2nd hard drive

[Chris Clarke]

Hi All,

    I recently installed fedora 3 and let the installer setup lvm for
me, I left it with all the default names, just changed the sizes a
bit.  I then added a second hard drive (hdb) from an old install which
I mounted as /movies which works fine.  I'd like to add hdb to the
/myth partition. How do I go about adding a hard drive to lvm?  I
realize I have to format it, but where do I tell lvm about the drive? 
Here's my setup to clarify....

    Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       20G  5.3G   13G  29% /
/dev/hda1              99M   16M   79M  17% /boot
none                  252M     0  252M   0% /dev/shm
/dev/hdb1             147G   72G   68G  52% /movies
/dev/mapper/VolGroup00-LogVol02
                      127G   69G   52G  57% /myth

TIA for an help/pointers...

Chris