How to move/arrange partitions

[gf durin]

Dear all,
when I installed FC4 I made quite a mistake. I have 2 disks, one is old, 
  and slow (hda), the other (hdb) is new, fast, and big.
I had to remove the first disk, but I did not, so now the system is 
quite slow everytime it accesses the first disk (which means continuously).
My situation is now:
---------------------------------------
Disk /dev/hda: 10.0 GB, 10005037056 bytes
255 heads, 63 sectors/track, 1216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1          13      104391   83  Linux
/dev/hda2              14        1216     9663097+  8e  Linux LVM

Disk /dev/hdb: 81.9 GB, 81964302336 bytes
255 heads, 63 sectors/track, 9964 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/hdb1   *           1        9964    80035798+  8e  Linux LVM
--------------------------------------------------------
/dev/mapper/VolGroup00-LogVol00
                        15G  9.8G  3.7G  73% /
/dev/hda1              99M   28M   66M  30% /boot
/dev/shm              110M     0  110M   0% /dev/shm
/dev/mapper/VolGroup00-LogVol02
                        69G  1.6G   64G   3% /home
--------------------------------------------------------

Now the question: is there a way to move everything from hda to hdb?
If it is too complicated, I will switch to FC5...

Thanks for your help
Gianfranco