strange folders on disc

Hello!

I have noticed some strange folders on my usb harddrive

Some of these folders cannot be deleted.
One of them named:
"9b2529692949a1396c06b567"
has subfolders
1025
1028
1029
.....
2070
3076
3082

Every of these folders contains files:
"eula.rtf"
and
"HotFixInstallerUI.dll"

The subfolder "1033" contains "eula.rtf" file which has the following
information:
"PLEASE NOTE: Microsoft Corporation (or based on where you live, one of its
affiliates) licenses this supplement to you. You may use it with each
validly licensed copy of Microsoft Visual Studio 2008 Service Pack 1, or
Microsoft Windows operating system software (for which this supplement is
applicable) (the "software"). You may not use the supplement if you do not
have a license for the software. The license terms for the software apply
to your use of this supplement. Microsoft provides support services for the
supplement as described at
www.support.microsoft.com/common/international.aspx."


Every "eula.rtf" file of each subfolders has the same text "PLEAS NOTE:
Microsoft Corp...." but in a different language, even on chinese or japan.

Can you tell me how to remove this folders? Is it a virus? Is it a spyware?
Are these data from Microsoft after doing some update?

I have these folders on two usb harddrives, which cannot be removed by me
because some process blocks it.

I have WIN XP Service Pack 3.

Please help me
Netman

 

EULA means End User License Agreement, the numbered folders are the various
languages, English is 1033 if my memory serves me properly.

The folders came from the installation of Microsoft Office. You could delete
all of them and not recover enough space to change anything, so my
suggestion is to leave them alone. They are not a virus and don't do
anything by being there. I suppose you could delete them if you need to, but
if deleting them makes a difference, you probably have other far more
serious issues.