The $NtUninstallKBxxxxxx$ folders and associated files in these
folders are created during each Windows Update that is installed
on your PC and are safe to remove if you do not plan to uninstall
any security or hotfix updates.

However once deleted you will no longer be able to un-install
a patch or update that was associated with the deleted folder/files.
I would keep the most recent set (last two months just in case) of folders
and delete the older updates.
Note: As a safety net I burn these folders to a CD or DVD before
deleting them.

After deleting the $NtUninstallKBxxxxxx$ folders,
open the Control Panel, select Add or Remove programs,
and remove the checkmark in the 'Show Updates' box.
Add/Remove will now longer see the Windows updates you deleted.

Other folders that may be on your hard drive:
$NtServicePackUninstallIDNMitigationAPIs$
$NtServicePackUninstallNLSDownlevelMapping$
Created if and when you installed IE7.
If you delete them you will no longer be able to uninstall IE7

$NtServicePackUninstall$
Created when you install a service pack.
If you are currently using XP with SP2
then if you remove the folder you can no longer
uninstall SP2. When and if you install SP3 this folder will be
deleted and replaced by a new SP3 $NtServicePackUninstall$
folder to be used if you uninstall SP3.
If you have already installed SP3 then I would leave
this folder as is, at least until you are certain that no bugs have
cropped up after installing SP3.
Note: Once you delete this folder you are stuck with SP3

Warning: One folder you should not delete is: $hf_mig$
(and any folders that are part of/contained in $hf_mig$)
It is a necessary folder for future updates

Also See Doug Knox's page on this issue:
http://www.dougknox.com/xp/utils/xp_hotfix_backup.htm

And:
Is it safe to delete the $NtUninstallKBxxxxxx$ folders:
http://www.pagestart.com/ntuninstall.html


--
JS
http://www.pagestart.com



"Frankie" <Frankie@discussions.microsoft.com> wrote in message
news:CAB9496D-AEC4-4A77-B79F-8F54C250D36F@microsoft.com...
> I have a lot of files such as: $NTUninstalKB887742$,
> $NTUninstalKB908250$,
> $NTUninstallKB888111WXPSP2$, in my C:\Windows files.
> They are in a blue color as opposed to black for other files in the same
> file. Can I safely delete these and what are they?
>
>
>