Securing my XP pro desktop.. index.dat?

Running XP Pro at work.

Domain Admins are able to access my Desktop. I can tell some users
have accessed my machine from new directories in \documents and
settings.

I've removed some of those directories, but one of them tells me the
file index.dat is in use, but I can't find that file in the Documents
and Settings user subdirectory. What does this mean?

How can I tell the last time a user has logged into my machine?

Index.Dat is a database component of Internet Explorer.

Unless logging is enabled, one way to determine user access
is in each profile folder examine the date stamp of NtUser.Dat


"jc" <jobs@webdos.com> wrote in message
news:3a8b9fcd-4081-4ce9-abce-124ec785bd96@34g2000hsh.googlegroups.com...
> Running XP Pro at work.
>
> Domain Admins are able to access my Desktop. I can tell some users
> have accessed my machine from new directories in \documents and
> settings.
>
> I've removed some of those directories, but one of them tells me the
> file index.dat is in use, but I can't find that file in the Documents
> and Settings user subdirectory. What does this mean?
>
> How can I tell the last time a user has logged into my machine?