Uninstalling Dual Boot program from XP

Since 10 July I have been running Windows XP SP2 and Windows Vista build 5384
on a dual boot basis.
Both of the relevant partitions are on my fixed HDD (IDE port 0) together
with a third partition which is reserved for data only. I also have a
"slot-in" caddy on IDE port 1 which enables me to use a number of different
HDDs (one at a time of course) for external storage - including offsite
backups. On top of this, I have an external USB HDD.

I have not accessed Windows Vista extensively and have not installed many of
the applications I use on XP. However, I am finding that problems have
developed when using XP which seem to be due to driver corruption. I would
therefore like to uninstall BOTH Windows Vista AND the dual boot program
completely as I suspect that deleting the Vista partition only is unlikely to
be fully effective. However, I have seen nothing at all relating to the
uninstallation of that part of the dual boot program which has been installed
on the XP partition.

Can this be uninstalled and, if so, HOW??

I would mention that I do have an alternative course of action as I have a
Norton Ghost backup of my XP partition as at 1st July. This could be
restored to the first partition on the fixed HDD after deleting and
formatting both that partition and the Vista partition. My data, being on a
separate partition, will not be affected and the restored XP partition would
only need minor updating. However, I would prefer to uninstall the dual boot
and only use my backup as a last resort.

Any advice and assistance will be gratefully received.